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-   1992-1999 (https://www.gmforum.com/1992-1999-91/)
-   -   New motor same old problem. (https://www.gmforum.com/1992-1999-91/new-motor-same-old-problem-254382/)

willwren 03-26-2007 08:47 PM

Yes. And weight equals mass. So when you romp on it with a heavy balancer, the rings lag. But on a light balancer, they don't.

You need a year-model-specific balancer. It MIGHT be your problem. Hard to tell.

Peterg22000 03-26-2007 08:55 PM


Originally Posted by willwren
Yes. And weight equals mass. So when you romp on it with a heavy balancer, the rings lag. But on a light balancer, they don't.

You need a year-model-specific balancer. It MIGHT be your problem. Hard to tell.

just got off the phone with my mechanic, he said that there was no way there was a weight differance that would cause this.

And givent the curcumstances i would have to agree because i had this identical issue with the original factory HB and its not liek i always had the problem, it only started last April (going down to NEBF) before that there was never a problem

bonnie94ssei 03-26-2007 09:00 PM

One of the wrong parts I installed on mine which was allegedly both for a 94/95 was in fact weighted differently. After getting the right number 594-161 (IIRC) I checked my ORIGINAL HB to the new one and the weight was the same size...but when checking the new one with the wrong part I had installed, the weight on the wrong one was much larger (looked to be 3 times the size).

So you said the HB was from another car? What year was it? I assumed you took it from another 92...but if not that could be a problem. And since you swapped anything at all off the HB, you must have had the wrong part IMO.

Right away I noticed my car idled bad with the wrong HB. You said after yours warmed up it ran poorly? How did it idle?

Since you just reinstalled a new engine it could be something else...but if the wrong HB is on there that's a start.

Peterg22000 03-26-2007 09:05 PM

Idle is fine, drives good on Light throttle but is a real dog on mid-heave throttle :(

Peterg22000 03-26-2007 09:06 PM

OH and im getting KR like theres no tomorrow
i saw 7* on a small blip and i hit 20* and a small punch :x

Peterg22000 03-27-2007 10:01 PM

BUMP.



you guys think the KR issue might be the PCM needing to learn or something?

bonnie94ssei 03-27-2007 10:07 PM

I wish I could help. Given it being a newly installed engine, it could be a few things. I hope you get it running well!

2000SilverBullet 03-28-2007 12:29 AM

That's a similar problem that I am experiencing with KR.....not affecting power that is quite strong.

You may have a fuel issue. :?

Peterg22000 03-28-2007 01:31 AM

not sure, my Fuel pump is new and the filter has only 10-15K on it. although i wasnt happy with the look of my Injectors, i do have a set coming from FIE soon :D



anything else guys?


I know im being a little premature given i only have 6km on the motor (no plates to put it on the road) but i can just tell its not right.

even when cold the car feels lik eit has bad turbo lag :x

BillBoost37 03-28-2007 06:24 AM

It's tough to tell Pete. The distance thing keeps us from checking the obvious.

Get a scan tool on it, get a fuel pressure test. And if you'd like a suggestion, put the factory sized pulley on there. Once you get it running good in stock form, then change down.

Meanwhile, the computer is trying to learn things, and at the moment..we have no idea what it is seeing.

On the HB, if the motor seems unbalanced, then it's the wrong balancer. If it runs smooth... it's probably going to work.


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