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| mcam mana mau check engine masi bgus/xda? | |
| Author | Message |
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AP3_3927 REGULAR
Countries/State : Age : 31 location : keningau-kk Tag ID: : SFC 05172 Points : 11854 Reputation : 3 Number of posts : 338
| Subject: mcam mana mau check engine masi bgus/xda? 23/9/2009, 10:34 pm | |
| bleh tolong bgi tau mcam mana cara2 mau check engine kereta 2 maC ok atau x? bgi tips2 bagaimana cara check??? yg sy tau klu kereta tgh start tarik tu penyukat engine oil sama ada kluar asap/xda. 2 ja. hehe any other tips? |
| | | xiaomao MODERATOR
Countries/State : Age : 35 location : Kota kinabalu,sabah Website : https://www.facebook.com/profile.php?id=100002328674361 Tag ID: : 00735 Points : 14147 Reputation : 24 Number of posts : 7994
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 12:47 am | |
| apa model enjin itu?yang dah dalam kereta atau kedai hafkat? |
| | | AP3_3927 REGULAR
Countries/State : Age : 31 location : keningau-kk Tag ID: : SFC 05172 Points : 11854 Reputation : 3 Number of posts : 338
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 8:41 am | |
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| | | ProjectD ADMINISTRATOR
Countries/State : Age : 36 location : Kk-Keningau-Beaufort-Kuching Tag ID: : SFC02081 Points : 14366 Reputation : 10 Number of posts : 6723
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 9:18 am | |
| - AP3_3927 wrote:
- 4g63t maC dlam kereta..
tu kreta di mna?ko p minta tlg c richard@te37 cek... |
| | | AP3_3927 REGULAR
Countries/State : Age : 31 location : keningau-kk Tag ID: : SFC 05172 Points : 11854 Reputation : 3 Number of posts : 338
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 11:13 am | |
| adesss 2 org malam ja free 2. haha lg pun kereta 2 d kk. antara dia yg trun k'gau or sy yg p kk tingu.. 2 lar mau tau macam mo check ni. tkut2 pula engine bnyk masalah |
| | | ProjectD ADMINISTRATOR
Countries/State : Age : 36 location : Kk-Keningau-Beaufort-Kuching Tag ID: : SFC02081 Points : 14366 Reputation : 10 Number of posts : 6723
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 11:44 am | |
| - AP3_3927 wrote:
- adesss 2 org malam ja free 2. haha lg pun kereta 2 d kk. antara dia yg trun k'gau or sy yg p kk tingu.. 2 lar mau tau macam mo check ni. tkut2 pula engine bnyk masalah
cip vr4 baitu c te37...dea besa main tu brg.... |
| | | AP3_3927 REGULAR
Countries/State : Age : 31 location : keningau-kk Tag ID: : SFC 05172 Points : 11854 Reputation : 3 Number of posts : 338
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 1:20 pm | |
| hehe bru tadi t'jumpa dia drive frontier d gerbang tgh m'kejar hilux bos kdai part yg dkat kak ning tuE~ haha~ siap bnyi wastegate lae hilux yg dia kjar tue. |
| | | AP3_3927 REGULAR
Countries/State : Age : 31 location : keningau-kk Tag ID: : SFC 05172 Points : 11854 Reputation : 3 Number of posts : 338
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 1:21 pm | |
| - ProjectD wrote:
- AP3_3927 wrote:
- adesss 2 org malam ja free 2. haha lg pun kereta 2 d kk. antara dia yg trun k'gau or sy yg p kk tingu.. 2 lar mau tau macam mo check ni. tkut2 pula engine bnyk masalah
cip vr4 baitu c te37...dea besa main tu brg.... bkan ko pun king kar jua dlam engine 4gxx ni?? |
| | | DonJuanDeMarco REGULAR
Countries/State : Age : 47 location : SHAH ALAM Points : 12005 Reputation : 9 Number of posts : 269
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 5:11 pm | |
| - AP3_3927 wrote:
- bleh tolong bgi tau mcam mana cara2 mau check engine kereta 2 maC ok atau x? bgi tips2 bagaimana cara check??? yg sy tau klu kereta tgh start tarik tu penyukat engine oil sama ada kluar asap/xda. 2 ja. hehe any other tips?
buat CR test (wet & dry) |
| | | AP3_3927 REGULAR
Countries/State : Age : 31 location : keningau-kk Tag ID: : SFC 05172 Points : 11854 Reputation : 3 Number of posts : 338
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 7:17 pm | |
| - DonJuanDeMarco wrote:
- AP3_3927 wrote:
- bleh tolong bgi tau mcam mana cara2 mau check engine kereta 2 maC ok atau x? bgi tips2 bagaimana cara check??? yg sy tau klu kereta tgh start tarik tu penyukat engine oil sama ada kluar asap/xda. 2 ja. hehe any other tips?
buat CR test (wet & dry) CR test?? er.. mcam mana tu ar? |
| | | DonJuanDeMarco REGULAR
Countries/State : Age : 47 location : SHAH ALAM Points : 12005 Reputation : 9 Number of posts : 269
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 8:04 pm | |
| Dry or wet test The wet and dry test is usually done to determine piston and piston ring wear. If the valve seats are worn and there is leakage, the cylinder will not be able to hold pressure. So if you do both the wet and dry test, and the cylinder pressure is still low, you will need to check whether the seats are worn or there is a leak in the cylinder head gasket. This is done using another test, which involves putting the piston on TDC on the compression stroke and applying air pressure through the spark plug hole. Then by listening in the inlet manifold, one can tell if there is a leak in the inlet seat, etc. There are many other problems that can be detected by applying pressure this way. Spark plugs being oily, usually indicates "blow-by" and could be wear in the pistons and rings or even worn valve guides or seals. Unfortunately it is not easy to identify valve seal leakage unless the head is taken off or if one has a scope to look at the valve through the spark plug hole. Leaking valve seals usually show as heavy deposits on the back of the valve. Sooty plugs are usually because of too rich a mixture. gambar compression test kits.... |
| | | DonJuanDeMarco REGULAR
Countries/State : Age : 47 location : SHAH ALAM Points : 12005 Reputation : 9 Number of posts : 269
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 8:12 pm | |
| sikit lagi info How to perform a COMPRESSION TEST
INTRODUCTION: Compression testing is a good way to measure the condition of the rings, cylinders, and valves. You will need a helper to do this test. It can be done alone, but is more difficult, and you cannot see how the cylinder pumps up. TESTING (DRY) The engine must be warm, the ignition disabled, and all sparkplugs removed. Caution: Wear protective clothing and gloves while working around a hot engine. While doing the test, the throttle and choke plates must be fully open for an accurate test. Have your helper fully depress the accelerator while he is cranking the engine. Caution: Avoid any flames around the engine during the test because of the air/fuel mixture being pumped out of the open sparkplug holes. Connect the tester to a cylinder and turn the engine over about 6 to 8 compression strokes. You will be able to hear the cranking speed slow as the tested cylinder comes up on it's compression stroke. Note how fast the compression increases and jot down the highest reading. Test all four cylinders the same way with the same number of compression strokes. INTERPRETATION OF THE DATA There is more than one school of thought on what the compression of the average engine should be. As a general rule a compression of 135 PSI or better is excellent, and a compression of 85 PSI or lower is extremely bad. The most desirable situation is that all cylinders give the same or close to the same reading, and that reading is above 135 PSI. Uneven readings are not uncommon on worn engines, and as long as the difference between the highest and lowest readings are no more than 21 PSI and the lowest reading is 100 PSI or better, then the engine is acceptable. Greater differences between cylinders indicate worn or broken rings, leaky or sticky valves or a combination of all. When you were observing the gauge during the cranking of the engine, you should have noticed the way each cylinder pumped up. Usually, a cylinder will produce about 40 PSI on the first stroke and about 35 PSI on each additional stroke until the maximum compression is reached. Problem cylinders may have trouble pumping up and may increase by only something like 10 PSI per stroke. You may be able to crank these cylinders enough times to come close to the other cylinder's total PSI, and this is one reason to limit the number of compression strokes. Poor rings usually cause this condition. Be aware that a cylinder suffering from excessive oiling, even from bad rings, can yield high compression test results because the excess oil in the cylinder seals the rings. Other symptoms may give you a clue to the problem (a smoking engine). There are some variables that affect the readings obtained from compression testing. They are cranking speed, altitude, temperature, worn camshaft lobes, and high performance long duration profile camshafts. The cranking speed needs to be maintained the same for each cylinder. This may mean jumping your battery to maintain the speed. The effect of the two camshafts above is the same, one of lower readings. Compression data is usually based on 14.7 atmospheric pressure and 59F at sea level. There are factors to compensate for the different altitudes and the corresponding temperature differences. These are as follows: 1000' = .9711, 2000' = .9428, 3000' = .9151, 4000' = .8881, 5000' = .8617, 6000' = .8359, 7000' = .8106, 8000' = .7860. The equivalent compression reading for a cylinder that should be 135 PSI by the data at 5000' would be 135 x .8617 = 116.33. TESTING (WET) Many automotive books describe a dry and a wet compression test. Usually these tests must be interpreted together to isolate the trouble in cylinders or valves. Unfortunately, the wet compression test is unreliable when performed on engines where the cylinders are horizontal (like the old VW). To perform the wet test, a tablespoon of oil is poured into the cylinder though the sparkplug hole before checking the compression. On horizontal cylinders, oil does not spread evenly over the piston crown, a necessity for this test. With the above said, you squirt the tablespoon of oil (SAE 30W is fine) into a cylinder that is reading low. Crank the engine two revolutions or so to spread the oil then retest the cylinder. If the compression comes up markedly, 40 PSI or more, the trouble is poor ring to bore sealing. If compression doesn't increase much, about 5 PSI, then the problem is probably with the valves. It could also be pulled head studs or a warped cylinder head. RECAP:
- Charge the battery if the battery is not fully charged.
- Disable the ignition system.
- Disable the fuel injection system.
- Remove all of the spark plugs.
- Block the throttle plate wide open.
- Start with the compression gauge at zero, and crank the engine through
6 compression strokes (6 puffs).
- Make the compression check for each cylinder. Record the reading.
- If a cylinder has low compression, inject approximately 15 ml (one
tablespoon) of engine oil into the combustion chamber through the spark plug hole, recheck the compression and record the reading.
- The minimum in any one cylinder should not be less than 70% of the
highest cylinder. No cylinder should read less than 100 PSI. For example, if the highest pressure in any one cylinder is 150 PSI, the lowest allowable pressure for any other cylinder would be 105 PSI.
Interpreting the readings.
- Normal: Compression builds up quickly and evenly to the specified
compression for each cylinder.
- Piston Rings Leaking: Compression is low on the first stroke. Compression
builds up with the following strokes but does not reach normal. Compression improves considerably when you add oil.
- Valves Leaking: Compression is low on the first stroke. Compression
usually does not build up on the following strokes. Compression does not improve much when you ad oil.
- If two adjacent cylinders have lower than normal compression and injecting
oil into the cylinders does not increase the compression, the cause may be the head gasket leaking between the cylinders.
- ini perkara basic,pomen sepatutnye tau.. |
| | | AP3_3927 REGULAR
Countries/State : Age : 31 location : keningau-kk Tag ID: : SFC 05172 Points : 11854 Reputation : 3 Number of posts : 338
| Subject: Re: mcam mana mau check engine masi bgus/xda? 24/9/2009, 9:06 pm | |
| ui na ni mendalam sua ni ada cara2 lain lagi utk cek engine tanpa guna alat2 canggih ni? mksd sy guna tangan n mata ja~ besala org xda pengalaman |
| | | DonJuanDeMarco REGULAR
Countries/State : Age : 47 location : SHAH ALAM Points : 12005 Reputation : 9 Number of posts : 269
| Subject: Re: mcam mana mau check engine masi bgus/xda? 25/9/2009, 4:50 pm | |
| guna tangan & mata.. bukak head cek internal cylinder head cek block & piston..
satel |
| | | SEPANA JUNIOR
Countries/State : Age : 39 location : ulang alik kgau-hawai Tag ID: : SFC 06743 Points : 11412 Reputation : 4 Number of posts : 139
| Subject: Re: mcam mana mau check engine masi bgus/xda? 27/9/2009, 7:11 pm | |
| - DonJuanDeMarco wrote:
- sikit lagi info
How to perform a COMPRESSION TEST
INTRODUCTION: Compression testing is a good way to measure the condition of the rings, cylinders, and valves. You will need a helper to do this test. It can be done alone, but is more difficult, and you cannot see how the cylinder pumps up. TESTING (DRY) The engine must be warm, the ignition disabled, and all sparkplugs removed. Caution: Wear protective clothing and gloves while working around a hot engine. While doing the test, the throttle and choke plates must be fully open for an accurate test. Have your helper fully depress the accelerator while he is cranking the engine. Caution: Avoid any flames around the engine during the test because of the air/fuel mixture being pumped out of the open sparkplug holes. Connect the tester to a cylinder and turn the engine over about 6 to 8 compression strokes. You will be able to hear the cranking speed slow as the tested cylinder comes up on it's compression stroke. Note how fast the compression increases and jot down the highest reading. Test all four cylinders the same way with the same number of compression strokes. INTERPRETATION OF THE DATA There is more than one school of thought on what the compression of the average engine should be. As a general rule a compression of 135 PSI or better is excellent, and a compression of 85 PSI or lower is extremely bad. The most desirable situation is that all cylinders give the same or close to the same reading, and that reading is above 135 PSI. Uneven readings are not uncommon on worn engines, and as long as the difference between the highest and lowest readings are no more than 21 PSI and the lowest reading is 100 PSI or better, then the engine is acceptable. Greater differences between cylinders indicate worn or broken rings, leaky or sticky valves or a combination of all. When you were observing the gauge during the cranking of the engine, you should have noticed the way each cylinder pumped up. Usually, a cylinder will produce about 40 PSI on the first stroke and about 35 PSI on each additional stroke until the maximum compression is reached. Problem cylinders may have trouble pumping up and may increase by only something like 10 PSI per stroke. You may be able to crank these cylinders enough times to come close to the other cylinder's total PSI, and this is one reason to limit the number of compression strokes. Poor rings usually cause this condition. Be aware that a cylinder suffering from excessive oiling, even from bad rings, can yield high compression test results because the excess oil in the cylinder seals the rings. Other symptoms may give you a clue to the problem (a smoking engine). There are some variables that affect the readings obtained from compression testing. They are cranking speed, altitude, temperature, worn camshaft lobes, and high performance long duration profile camshafts. The cranking speed needs to be maintained the same for each cylinder. This may mean jumping your battery to maintain the speed. The effect of the two camshafts above is the same, one of lower readings. Compression data is usually based on 14.7 atmospheric pressure and 59F at sea level. There are factors to compensate for the different altitudes and the corresponding temperature differences. These are as follows: 1000' = .9711, 2000' = .9428, 3000' = .9151, 4000' = .8881, 5000' = .8617, 6000' = .8359, 7000' = .8106, 8000' = .7860. The equivalent compression reading for a cylinder that should be 135 PSI by the data at 5000' would be 135 x .8617 = 116.33. TESTING (WET) Many automotive books describe a dry and a wet compression test. Usually these tests must be interpreted together to isolate the trouble in cylinders or valves. Unfortunately, the wet compression test is unreliable when performed on engines where the cylinders are horizontal (like the old VW). To perform the wet test, a tablespoon of oil is poured into the cylinder though the sparkplug hole before checking the compression. On horizontal cylinders, oil does not spread evenly over the piston crown, a necessity for this test. With the above said, you squirt the tablespoon of oil (SAE 30W is fine) into a cylinder that is reading low. Crank the engine two revolutions or so to spread the oil then retest the cylinder. If the compression comes up markedly, 40 PSI or more, the trouble is poor ring to bore sealing. If compression doesn't increase much, about 5 PSI, then the problem is probably with the valves. It could also be pulled head studs or a warped cylinder head. RECAP:
- Charge the battery if the battery is not fully charged.
- Disable the ignition system.
- Disable the fuel injection system.
- Remove all of the spark plugs.
- Block the throttle plate wide open.
- Start with the compression gauge at zero, and crank the engine through
6 compression strokes (6 puffs).
- Make the compression check for each cylinder. Record the reading.
- If a cylinder has low compression, inject approximately 15 ml (one
tablespoon) of engine oil into the combustion chamber through the spark plug hole, recheck the compression and record the reading.
- The minimum in any one cylinder should not be less than 70% of the
highest cylinder. No cylinder should read less than 100 PSI. For example, if the highest pressure in any one cylinder is 150 PSI, the lowest allowable pressure for any other cylinder would be 105 PSI.
Interpreting the readings.
- Normal: Compression builds up quickly and evenly to the specified
compression for each cylinder.
- Piston Rings Leaking: Compression is low on the first stroke. Compression
builds up with the following strokes but does not reach normal. Compression improves considerably when you add oil.
- Valves Leaking: Compression is low on the first stroke. Compression
usually does not build up on the following strokes. Compression does not improve much when you ad oil.
- If two adjacent cylinders have lower than normal compression and injecting
oil into the cylinders does not increase the compression, the cause may be the head gasket leaking between the cylinders.
- ini perkara basic,pomen sepatutnye tau.. mmg pomen tau cam mana guna benda ni...tp harga untuk mendapat kan benda ni cukup mahal....n x di jual mana2 tempat melainkan oder dari pengelaur.... |
| | | DonJuanDeMarco REGULAR
Countries/State : Age : 47 location : SHAH ALAM Points : 12005 Reputation : 9 Number of posts : 269
| Subject: Re: mcam mana mau check engine masi bgus/xda? 27/9/2009, 7:33 pm | |
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