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Rb20 Missing

#skyginer

By #skyginer,
in Engines & Forced Induction

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#skyginer Enthusiast

#skyginer

Posted
Posted

Hey guys im having trouble with my s13 rb20 missing it has

New plugs

New leads

New au coilpack

Hiflow 33 turbo

Full exhaust

Xr6t intercooler

Walbro pump

Stock 32 auto ecu

The car starts and idles but it misses all through the rev range, sometimes bad enough to stop it revving.

All the plugs look like theyre burning the same (0.8mm gap) and it blows a small amount of fuel out the exhaust. Ive tried changing the leads around incase the firing order was out, and also dissconnected the afm to try see a change and there was no benefit. Cas timing is on the stock mark, and ive checked the coilpack wiring with the r31 clubs guide.

Im kinda stumped as to what it could be, any other ideas

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#skyginer Enthusiast

#skyginer

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Yes its auto....

And cyifly thats exactly it. Its able to rev right up like 4 5krpm at part throttle but almost instantly stops at wot.

Ill check the afm today, i think theyre different to gtr afms though. I pulled apart my gfs 33 gtst afm to find they are completely different internally, and i suspect rb20 25 afms are the same

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  • 1 month later...
#skyginer Enthusiast

#skyginer

Posted
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Hey guys, reviving this old thread.

The issue still hasnt been resolved, but my last piece of the ignition system seems to be either ignitor or cas. Anyhow ive been trying to source another rb20 ignitor without success. Gumtree, wreckers etc

Has anyone converted their rb20 to run another style ignitor?

Rb25, vg30de, or something else?

This issue is really giving me the shets, i cant drive this thing and i need to do some shed skids

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GTSBoy Grand Master

GTSBoy

Posted
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You'd be far better off doing as zebra says. Why anyone would install a 3 coil wasted spark setup onto an RB is beyond me. The smart money is on getting a set of known good stock coils (probably impossible for an RB20) or stumping up for a set of Splitfires. If you really, really wanted to modernise it, you could buy some (Splitfire) coils to suit a later RB25 that have built in igniters. You'd need a coil loom to suit, and have to do some rewiring at the point where the old igniter was between the ECU loom and the coil loom, but that's not likely to be hard if you've already dived deeply enough into this wiring to bodge in AU coils.

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Ben C34 Grand Master

Ben C34

Posted
Posted

What dwell do the au coils need? If you don't give them the right dwell it will miss. I put ls coils in my car. On stock dwell it would miss under high load, sort out the dwell an unsurprisingly the miss is fixed.

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XRATED Veteran

XRATED

Posted
Posted

RB20 Missing....

Where did it go? Have you found it? Who stole it? Did the rb30's bully it so it packed up and went home? How can you loose a 150kg engine? it's not like it's a set of keys... oor are you a giant? You probably are, and use an rb20 as a key chain... that great.

Well I hope you find you rb20 soon.

J.

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Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

RB20 Missing....

Where did it go? Have you found it? Who stole it? Did the rb30's bully it so it packed up and went home? How can you loose a 150kg engine? it's not like it's a set of keys... oor are you a giant? You probably are, and use an rb20 as a key chain... that great.

Well I hope you find you rb20 soon.

J.

hahahaha beat me to it... was going to suggest calling the police and report the engine number :)

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https://www.sau.com.au/forums/topic/427634-rb20-missing/#findComment-6954629
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gts25t4door Experienced

gts25t4door

Posted
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Mine was missing for ages, I got it on the dyno and checked the AFR, it was extremely low. The mechanic replaced the fuel pump and bingo AFR went up to 14/15 and miss went away. Check out the fuel pump.

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