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Ignition Problems Rb20

Psymon

By Psymon,
in Engines & Forced Induction

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Psymon Mentor

Psymon

Posted
Posted

Ok a brief history... just did a timing belt plus a few other things on my RB20. Threw it back together and it was running fine... then it just stopped running. The engine is still getting fuel so i'm assuming i have an ignition problem.

The engine has larger cams... probably doesn't make a difference but just throwing it out there.

Also when i put it back together i didn't put the upper timing cover back on because it had a clear one on there which was too much of a problem because the bubble on the intake cam size for the vct on RB25's was causing the intercooler pipe to foul on the fan. I've since read that I should have spaced out the cam angle sensor when running it without a top cover but couldnt' find a reason. Could doing this have damaged my CAS? The keyway on the end of the cam still seems to be intact. Looks like there's a bit of gunk inside the shaft of the CAS but it still has its half moon shape. It is very tight when sliding it onto the cam though, also once it's on it's hard to move it left and right.

Because I live in the sticks there's no one with another skyline that i can borrow a CAS off to test it.

I've checked all the plugs and connections i can think of that might relate to the problem. The car has a brand new set of splitfire coil packs. I've put new plugs in it.

Just before it stopped running i adjusted the timing slightly by moving the CAS. I also adjusted the idle with the screw on the AAC valve.

Thoughts or ideas? I'm pretty stumped at the moment!!

Thanks guys!

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https://www.sau.com.au/forums/topic/307570-ignition-problems-rb20/
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GTScotT Grand Master

GTScotT

Posted
Posted

take the cas off, take a coil out leaving it plugged in, whack an old spark plug into the coil and rest it against the intake manifold. turn the key to on but dont crank it, now come back to the cas and spin it in any direction.. that plug should start sparking. if not, try another cas.

the cas should spin very freely, if its stiff, its rooted. do this and report back.

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