12-19-2008, 04:18 PM
Join Date: Sep 2008
Location: Sandy, Utah
Total Cats: 0
Power loss 3K-4.5k - Ideas?
I have a 95 1.8, still N/A running stock ECU/spark/fuel.
I reinstalled the engine about a week ago and have been driving it around just a little bit. It is having some pretty noticeable hesitation between 3000 and 4500 RPMs. Before and after that rev range it pulls solid and normally, but feels starved in between.
I have a NBO2 gauge installed by the PO, and it reads fairly lean while it's lacking power. I don't know how much to believe a narrow band sensor though...
Before I pulled the engine for oil leak fixing (no more leaks by the way) it was running fine.
My first thought was timing, but I am seeing about 11*-12* btdc which I think is ok. My next thought is a fuel filter. I'll probably replace the fuel filter anyways, but thought it would be something else because it didn't hesitate before. It was only out of commission for about 3 weeks, and I put brand new gas in it as soon as it was back on the road.
Anyone else have any other ideas or things I should check? I'll also be replacing the plugs. They don't look too bad, but I don't know when they were replaced and they are cheap and easy.
I'm trying to get it running great before I install the MS and compound the difficulty in trouble shooting. Any help appreciated.
Last edited by Cpt_Slow; 12-19-2008 at 04:19 PM.
Reason: Noob grammar error