1990 chevy 2500 computer issues

[tbitrouble]

Mine has the sm465. BCC is AKWH

[tbitrouble]

So I cleared the EGR valve and still have issues. I've searched long and hard for a vacuum leak and have not found one. How common is it for the intake to leak or crack on the underside?

[steveo]

if it runs that much better with the wire unplugged, it does sound like a timing issue, i'd take a gamble that you didn't time the distributor correctly? did you trust the pulley's timing mark for TDC, or...

if you suspect a timing leak and can't find it, might have to borrow a smoke machine, that's the best way to find 'em.

[tbitrouble]

Well, there is only one mark on the balancer. So I have no choice but to trust that its correct. As for procedure, I unplugged the timing wire and set to 0º TDC. Am I missing something?

[EagleMark]

Well, there is only one mark on the balancer. So I have no choice but to trust that its correct. As for procedure, I unplugged the timing wire and set to 0º TDC. Am I missing something?

Sounds good!

if you suspect a timing leak and can't find it, might have to borrow a smoke machine, that's the best way to find 'em.

Yeah them timing leaks are a bugger to find without a smoke machine...

I'm on enough pain meds it made sense too!

[steveo]

timing leak...damn i've been online too long today