Rb26 Missing, Spluttering, Sluggish, Being A flamin mongrel. Help Me Before I Burn This.

[Mohsen]

hey guys

getting over this piece of shit.
freshly built 26 with GTSS's
stock boost, stock injectors, pump with 12v direct feed and stock ecu.
the goal is to get it running nice and mint, in stock format, before i begin adding more fuel, boost etc and reach the final goal.

so far.
car does not miss on idle.
car will miss, splutter, cough etc when given a bit of throttle when cold, wont get above 15kms
once warm, the car will not miss at all, and will drive normal, although EXTREMELY SLUGGISH
i mean, so sluggish the old RB20 went harder than this.
it feels like theres a restriction somewhere.

its doing my head in,



thank you in advance.
ps: im seriously considering burrying this car, this car is the root of all evil, this car is the devil Z's R chassis cousin.
f**k this car.

[zebra]

Cam timing?

Cas?

[Mohsen]

timings on 20 degrees

[zebra]

Cam timing, not ignition timing

[scotty nm35]

Moh, learn to internetz mechanic better.

[XKLABA]

Check TPS and AFMs, I'd be more AFMs

[Mohsen]

Wont be the afms as they were swapped out and cleaned, as well as had the solder mod.
tps is possible, cam timing is in stock position.
could be a collapsed cat?

[scotty nm35]

It's easy enough to drop the flange and see if it helps, but it would have to be a pretty bad blockage... Rag in the cooler pipe perhaps?

[Mohsen]

im about to leave work and will have a look when i get home.

[XKLABA]

What about a leak between the AFMs and throttle bodies, like a split hose or a hose pulled out of a clamp

[Piggaz]

Take to competent tuner, decent ecu, smoke test, get on dyno.

Report back.

[Mohsen]

Will check afm leaks.

Piggaz, were trying to get it to run properly on the standard hardware first before I throw in the Ecu etc

[Dose Pipe Sutututu]

borrow another CAS, unplug TPS and re-time at 20, plug back TPS, report back

[SiR_RB]

Need aftermarket ecu and tune?

[Mohsen]

wasnt able to get much done, as the week end was pretty busy, and it was raining.

borrow another CAS, unplug TPS and re-time at 20, plug back TPS, report back

will try this as soon as i can

[flavzz]

I had a very similar issue with my 26. Ended up being faulty cas. Get a workshop to plug into your ecu to check.

[GD51LA]

Mine had the same issue, just felt like it was being held back, I swapped the igniter, been perfect ever since

[flavzz]

Any luck sorting this out yet mate?

Edited May 29, 2014 by flavzz