have recently bought an impreza classic, when im accelerating hard at around 3500 to 4500 revs the engine seems to cut out momentarily, but if I accelerate gently it will go through and keep going could anyone help identifying the problem?

 

I had this problem many years ago....but cant remember why...though if you post in the Techinical Section i am sure someone will reply back fairly quickly...


From the botton of the page where it says Forum Jump, select General techinical then go...and post in there...

 

Coil packs

 

worth having a look at the plugs,not just the condition but gaps as well.my 95 sti was doing much the same as yours and a set of plugs cured it.thankfully the coilpacks did'nt need changed

 

Fuel cut? If you are runnng boost close to the limit then a drop in ambient temp can push it over the edge leading to fuel cut.

 

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I was thinking the same..overboost.

 

i had this problem with my integrale & it turned outto be the crank sensor needing udjusted as im new to subaru this is just a suggestion

 

Overfilled oil or dirty inlet tract>>>Oil in boost solenoid>>>Incorrect boost control>>>Overboost condition when you put your foot down>>>Fuel cut>>>'Hitting brick wall' effect which can be driven through if you take it gently.

Solution: clean your boost solenoid out with carb cleaner.