Quote:
Originally Posted by Bullett
Well so far I've checked compression (100 across the board cold), changed fuel pump, checked plugs, fixed minor fuel leak from filter, hunted down vac leaks (no test until tomorrow), and so far the wide band is still showing 14 and all the way to 17 @wot. the odd thing is its not breaking up. the idle is a little bubbly, but I'm assuming that's from my 39psi fuel pressure. Also I'm running an unrecirculated BOV only due to the fact I can't find hoses or piping long enough to reach the other side of the engine bay. Is it in any way Possible that I WOULDN"T feel this thing breaking up @WOT with an AFR of 17to 1???
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Nah, they will run fine at 16 or 17:1. they just get hot and parts will melt, the rings will break, the deck will get eaten up from pinging, hot spots rear their ugly face, the valve seals might even take abuse and the surly the oil could break down under such severe conditions causing excessive cylinder wear.
In other words, do not run the engine like that unless you "fix" the problem.
Try making a boost leak to see if that richens it up. make sure you are running 7psi or less of boost. Check for exhaust leaks before the wideband, any O2 leaking into the exhaust the wideband will read leaner. try another maf hot-wire from a SOHC KA24DE engine (cheap and easy to find).
It could just be your fuel pump if the problem is consistent.