A fouled or worn plug (spark gap too big) can do that. Also a bad ignition wire can do that. These are especially suspect if it is a particular cylinder that is missing. You may be able to ID it if you get a check engine light and the code is misfire cyl no. 3 or something like that. If it gets worse in rainy / damp weather, suspect a coil pack, spark plug boot or spark plug wire getting wet. If it is not a specific cylinder it may be a clogged fuel filter causing insufficient fuel pressure during high demand such as acceleration or pulling a hill.
A fouled or worn plug (spark gap too big) can do that. Also a bad ignition wire can do that. These are especially suspect if it is a particular cylinder that is missing. You may be able to ID it if you get a check engine light and the code is misfire cyl no. 3 or something like that. If it gets worse in rainy / damp weather, suspect a coil pack, spark plug boot or spark plug wire getting wet. If it is not a specific cylinder it may be a clogged fuel filter causing insufficient fuel pressure during high demand such as acceleration or pulling a hill.
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SOURCE: no power when foot down,deep blowing sound
check hoses the intake must be firm sometimes they go soft and collapse thus no air getting into turbo also check the small hose off turbo is not cracked
SOURCE: my b4 is driving like a normal car but turbos are
you blew your turbo bearings plane and simple. what had happend was your were probably racing around in it on a Stock pressuer relief valve (blow-off valve in street terms) and your pressuer backed up into the turbo, therefore sending the trubo's bearings for a spin the wrong way, probably nocked a couple in to the fan of the turbo and messed some stuff up. Auto salvage yard. you have the 2.0 H4 which is a very common subaru engine, and just pull apart a legacy touring or outback edition and grab all the turbo essentials. also to prevent this from happening, buy a cheap aftermarket blow off vavle, you'll hear a small wistle when you shift gears (if its a standard/manual transmission) but if not then you won't hear a thing. but its normal for the wistle to happen, that is letting you know your blow off valve is allowing any backed up pressure to escape. And one last thing, AUTO START is a big help with turbo engines, you can park it, take the key out, get out of the car and the car will remain running for 10-15 minutes to allow any back pressure from the turbo to work it self out of the engine. Trust me i have a nissan 240sx with a hevily modified engine, and until someone pointed this out, i blew and bought 4 turbo's
Do not do anything if it is a common rail diesel without more instruction. Common rail can be very dangerous & the following instructions are not for common rail. Probably is short of fuel. When was the fuel filter last replaced & the sediment trap drained. A lot of diesels also have a lint filter (fine mesh) located in the pump where the fuel line goes out of the filter into the pump. You just remove & blow out with compressed air. Do you know how to prime & bleed the system. Did the problem start just after haveing a fuel filter fitted?
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