Power cutting at full throttle

C

ColinMc

New member
Hey all, I'm not on here much, but I figure I need some help so it's worth a shot. Here's my setup:

Bored 30 over, SRP Pistons, JE rods, ARP hardware, Stock blueprinted cam, Double Roller Cam chain, Stock heads with new valvetrain, Rebuilt turbo with larger compressor and whatnot, Stock exhaust, stock intake with KandN drop in, AFPR, Walbro fuel pump, 50lb injectors, 3 bar MAP, reprogrammed chip from Waller Performance....i think thats it.

So the rebuild is recently finished...and i'm having issues. Whenever I get a little hard on it, not romping quite yet since it's a fresh rebuild...the engine cuts out high RPM's, almost like it's hitting fuel cut off? Boost leak? I'm at a loss. It seems to run fine except for a strange ticking coming from the AFPR or injectors...not sure which. I was having this problem with it cutting out before the rebuild too though...and it was bone stock before the rebuild. I'd appreciate any input anyone can give me...I'm willing to try anything at this point. Please let me know if any other info is needed to help at least get me in the right direction for troubleshooting...

Thanks,
Colin
 
Quickstop [UK]

Quickstop [UK]

Combating adversyty.
Re: Power cutting at full throttle

mine stutters like fuel starvation at 160 kmph or so..any ideas? I think it is fuel, but it runs fine the rest of the time...

The IC is bust though so maybe it is too hot and there is knock?

I guess I need to get DM on the case...
 
gjp

gjp

another post whore
Re: Power cutting at full throttle

Have you ran a DM on it. If you are seeing KR it will pull timming and that could be a lose of power you feel.
 
mrweelr

mrweelr

New member
Re: Power cutting at full throttle

Mine's did this for several weeks and it drove me nuts. I logged it with Datamaster and nothing looked unusual. I replaced the plugs, cap/rotor, and ignition module...still no dice. After several fresh tanks of gas, the problem (sputtering over 10psi) slowly went away. I must have gotten some bad fuel somewhere...lame.
 
HotRudyRod

HotRudyRod

New member
Re: Power cutting at full throttle

That sputter you feel at high rpm might be what happened to me when i got mine, i figure it always had a decent amount of fuel during the 1st 13 years of life and got driven the usual way ( nothing but forward ), then when i bought it almost never saw more than a half tank and plenty of times on reserve( i was in college ). What happened was that all the dirt that acumulated in the tank during those 13 years eventually got sucked up and clogged a few filters before it went away for good.
That strange ticking noise you hear is from the injectors, mine does it too but works fine. It's pretty normal.
Good luck.
 
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