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Idling would stabilize once engine management has learned new values. I didn’t clearly say it but what I meant was to block evap hose (both ends) and but gas cap loose, maybe reset ecu and leave it idling.
Testing if adding or decreasing accessory belt tension changes sound also detects problems with all other accessory belt driven components. If it has automatic tensioner just push it with wrench while engine is running. If sound doesn’t change its probably problem with timing belt components.
Testing if adding or decreasing accessory belt tension changes sound also detects problems with all other accessory belt driven components. If it has automatic tensioner just push it with wrench while engine is running. If sound doesn’t change its probably problem with timing belt components.
Could be turbo. Check air hose from turbo to intercooler for oil. If it makes blue smoke on cold start it maybe valve stem seals.
Could be turbo. Check air hose from turbo to intercooler for oil. If it makes blue smoke on cold start it maybe valve stem seals.
[quote=”valde” post=85440]
-Test for spark strength by extending spark plug cap. You can do this by holding spark plug about 6mm or 1/4’’ from engine block or using spark tester.
-Test spark timing with timing light.[/quote]If these things along with other things that you already have tested are ok engine will start.
[quote=”valde” post=85440]
-Test for spark strength by extending spark plug cap. You can do this by holding spark plug about 6mm or 1/4’’ from engine block or using spark tester.
-Test spark timing with timing light.[/quote]If these things along with other things that you already have tested are ok engine will start.
Could also be evap problem. Fixed one 1.8 with similar kind of problems. Never measured fuel trim since problem did get so bad that engine run with injectors unplugged. Test it by blocking hose from evap to throttle body and putting gas cap loose (this will create fault codes). If problems stop it probably is evap canister.
Could also be evap problem. Fixed one 1.8 with similar kind of problems. Never measured fuel trim since problem did get so bad that engine run with injectors unplugged. Test it by blocking hose from evap to throttle body and putting gas cap loose (this will create fault codes). If problems stop it probably is evap canister.
If engine has fuel, spark, compression, and timing it should start.
-You have fuel.
-Test for spark strength by extending spark plug cap. You can do this by holding spark plug about 6mm or 1/4’’ from engine block or using spark plug tester.
-Compression could be missing course of blocked exhaust or intake. So test for blocked exhaust by removing o2 sensor, like K5mudlife told. Test for blocked intake by opening throttle a bit while starting.
-Test spark timing with timing light.If engine has fuel, spark, compression, and timing it should start.
-You have fuel.
-Test for spark strength by extending spark plug cap. You can do this by holding spark plug about 6mm or 1/4’’ from engine block or using spark plug tester.
-Compression could be missing course of blocked exhaust or intake. So test for blocked exhaust by removing o2 sensor, like K5mudlife told. Test for blocked intake by opening throttle a bit while starting.
-Test spark timing with timing light.