EA82T High rev miss

wrx_nut · Post by **wrx_nut** » Sun Oct 01, 2006 8:23 pm

my ea82t has just started to play up...
when i give it a boot full...around 4500 - 5000 rpm (fairly full throttle) it cuts out for a second or 2 and jerks like the fuel completly cuts out (but very quickly)

if you back right off it runs normal.. if u keep your foot down after it jerks it goes fine

any suggestions? fuel filter? vaccume? timing?

cheers

wrx_nut

fredsub · Post by **fredsub** » Sun Oct 01, 2006 9:42 pm

I'd bet its spark and/or dizy cap. and bet it does free rev ok over that range too? been there.
i think fuel filter would give crapy running/boost throughout the rev range not just at a particular rpm.

subanator · Post by **subanator** » Mon Oct 02, 2006 12:19 am

Check that the vac line to the top of the fuel regulator is ok. Under boost the regulator (rising rate) might not be compensating for boost conditions.

schultzie · Post by **schultzie** » Mon Oct 02, 2006 9:44 am

also try closing the plug gap up a little, i had mine at 1.1mm like the manual says and have had this problem so i closed it back up to .9mm and it is fine, this is aparently a problem as soon as you crank up the boost and it will get detonation before it makes the plug causing this jerk.

Justin

tomkah · Post by **tomkah** » Mon Oct 02, 2006 10:43 am

Sounds almost like the problem I had. Turned out to be the fuelfilterS.

See here:

showthread.php?t=3269

Cheers,

Thomas

wrx_nut · Post by **wrx_nut** » Mon Oct 02, 2006 1:45 pm

thanks guys.. ill give it all a once over check tonight
the dissy cap looks a bit suspect to me as its cable tied down on one side...
spark plugs should be set to the appropriate gap (new and installed by steve_rising sun) good bloke he is

ill give you the news once i suss it out

thanks again

Suby Wan Kenobi · Post by **Suby Wan Kenobi** » Mon Oct 02, 2006 3:58 pm

Generally when EA82 NA and turbos start to break down at high revs it will be one of the long spark plug leads. check it out by misting some water over it and starting it in the dark.

Cozmo · Post by **Cozmo** » Sat Oct 07, 2006 5:23 pm

not boost cut?

wrx_nut · Post by **wrx_nut** » Sun Oct 08, 2006 6:29 pm

? ive got new leads on order for it this week top guns

smoov · Post by **smoov** » Mon Oct 09, 2006 12:36 am

dud injectors?

wrx_nut · Post by **wrx_nut** » Mon Oct 09, 2006 7:21 pm

its running fine throughout all other rev ranges so i dont reckon the injectors would be it...