base timing issue

[1SickAuto]

well i found out why my wideband has been reading so far off (needed recalibrated). with that fixed i was going to set my base timing. when i ground the timing plug the car will not run what so ever, it will start but die immediately after. can someone tell me what going on and why its doing this. thanks in advanced.

jesse

 

[snowborder714]

What does your logger say about timing at idle without the plug grounded?

 

[1SickAuto]

it bounces around 8* to about 15*, nothing steady

 

[snowborder714]

Sounds to be fine.

Where does your CAS look to be? Centered? More one way or the other?

What's your vacuum like at idle?

 

[1SickAuto]

maybe 10 psi. its an automatic. and from my understanding it should be way higher than that.

and cas isnt exactly center but, pretty darn close

 

[eclipse94turbo]

i grounded mine today to set the timeing and it droped about 200 rpm when grounded.i used white out and set my base timing to 5 degree advance.i used a 50$ timing light and had no preoblems with it makes things easy no guess work.

 

[1SickAuto]

i am using a timing light and i did use white out for a more visible reading on timing marks, so im not guessing, im doing everything right

 

[lacroixdp]

maybe 10 psi. its an automatic. and from my understanding it should be way higher than that.

Your vacuum at idle is 10 inches of mercury? Yah, that's a problem. My recently refurb'd engine sits at 24 inches of mercury at idle. Is it steady, or does it bounce around? You should do a boost leak test, compression and a leak-down test. I'm guessing your rings are very worn, or you have a vacuum leak.

 

[1SickAuto]

Your vacuum at idle is 10 inches of mercury? Yah, that's a problem. My recently refurb'd engine sits at 24 inches of mercury at idle. Is it steady, or does it bounce around? You should do a boost leak test, compression and a leak-down test. I'm guessing your rings are very worn, or you have a vacuum leak.

no its pretty steady. my next thing i am going to check is compression. i really hope thats not it though. ill keep everyone posted

 

[snowborder714]

Have you verified everything is in time? I would hope this would be noticeable, but you never know.

Otherwise, I'd do what Ryan suggested.

 

[1SickAuto]

I know for sure timing is in, I think its the rings though. I'm getting ready to check now, I'll keep everyone who helped updated

Starting from cylinder #1
120, 150, 135, 140 .

Now I'm in a bad mood. Thanks to all who helped

 

[lacroixdp]

Best of luck on your rebuild man!

 

[1SickAuto]

ahh ive built a few, not 4g63s but i built a srt4 motor for my 96 neon and i built a single sohc all motor for my other neon a couple years back. its nothing to far out of my league