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Hi, was after a few ideas of things to check with my r33, the problem is soon as it starts boosting up it missfires to the point it just doesn't run, just coughs and splutters, this happens at about 4 psi, as soon as i back off runs perfect. Things i have tried to do to rectify the fault is change, ecu, spark plugs (all came out totally black), afm, cas, ignition relays checked, igniter (the earth seems good too, I asume its the one that goes under one of the coil holding frame bolts), JJR coils went in about a week before this happened aswell. I haven't yet pressurised the system to check for air leaks yet but all the cooler pipes seem well sealed.

cheers

Edited by SevenAngryPenguins
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im having same problem aye, did urs start doing it suddenly? me mate put 95octane in his skyline and the thing just startn to get worse and worse missing, we changed the plugs and fuel filter but thinking mayb the injectors are screwed

dont know anyone else with a 33, but i chucked the old coils back in and the problem is still there

plugs are bcpr6es

Edited by SevenAngryPenguins

hook it into the fuel rail if its a standard pump at idle it should see around 40psi if this is the case then its alright but under load if it doesnt make anymore than that I would think your fuel pump would be dead.

i put in a walbro a few months back and when it primes it sounds strong but i will still check it, how did you look at the gauge under load, i will have to get my little brother to sit on the engine while i boost down the road.

Edited by SevenAngryPenguins

after lots of stuffing around ended up buying a supercheap aircompressor to check for boost leaks and found a massive one so problem solved!!

Edited by SevenAngryPenguins

it was where my first pipe off the intercooler joined with the crossover pipe just after it goes though the engine bay wall if that makes sense, it was joined with a silicone joiner it appeared as if it was perfectly sealed but the clamp was done up right on the edge of the metal pipe inside with a bit of air pressure it leaked like a siv. I'm a bit annoyed at myself that I didn't check the hoses more closely the first second and third time that i did it. Would of saved alot of stuffing around.

a picture speaks a thousand words so they say

post-36364-1198114946_thumb.jpg

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