View Single Post
Jeff NJ Jeff NJ is offline
Registered User
Jeff NJ's Avatar
Join Date: Nov 2013
Location: NW NJ
Posts: 1,186
Maybe I'm thinking of this the wrong way, but if his problem is not enough fuel (lean up top), how would a restricted return line cause that? If the pumps and FD are working correctly, but the bottleneck is at the return, wouldn't the fuel have nowhere to go and the system would go pig rich?

Or would the system pressure be thrown off from a return line restriction, causing the 100psi system pressure to be misleading?

Jim, do you remember what Coles issue was or what the symptoms were when he had the clogged return line?

Alan, I know you said the boost enrichment CP was in spec, but have you tried lowering it? Wouldn't "in spec" be for a stock motor? Yours needs a lot more fuel than a stocker does. On my Leask WUR I had to adjust the boost enrichment to get the AFR's in line when on full boost. Maybe you just have to keep tweaking it? I don't see a modified WUR in your car specs in your signature. What WUR are you using?
1988 930 Venetian Blue

Last edited by Jeff NJ; 10-25-2017 at 05:31 PM..
Old 10-25-2017, 12:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)