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H4-2.0L Turbo

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Question
"Fluttering" noise under heavy throttle/boost
Hello, thanks for writing in. If this occurs only under this high load condition then most of the time it is caused by a boost leak. I usually suspect that the intercooler has a crack as that will cause this...
Question
missfiring cylinder
It is possible the misfire is identified in a readout of Diagnostic Trouble Codes. If it is not intermittent, a diagnostic scope would quickly identify the cylinder. Could be a simple issue such as a spark plug wire defect or...
Question
Feels like front right tire has vibration when turning left or merging lanes to the left at highway speed only. Bearings are okay
Hello, thanks for writing in. If the bearings are fine then the tires need to be checked first. If there is any uneven wear then this will occur. If the tires are all fine then the hubs need to be...
Question
Mechanic changed cambelt and water pump and whilst returning it, it supposedly jumped off. Engine stopped dead. No more engine
Hello. I hate to say this but it is his fault. It sounds like he is not being truthful about what happened because if that was the case it would have come off well before he worked on it. It...
Question
Slipping clutch
Clutches are supposed to slip while the clutch is being engaged so the vehicle does not jerk or lurch forward when starting out. The clutch also needs to slip when the gears are changed to ease the shock on the...
Question
Exhaust system
The sound of the exhaust is not determined by whether it is a turbo-back, or a cat-back system. The determining factors for the amount of sound that comes from a given system are the size of the piping being installed,...
Question
What's your take on buying a COBB access port? People say what the car runs safer with less knocks vs stock.
Hello - I suspect the answer to this question revolves around whether you are making other modifications to the engine, and how often you drive with boost pressure near the limit. This device will offer more precise control for managing...
Question
The engine stalls under acceleration
This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in relation to your foot position on...

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