Switched to a new gauge...this new gauge reads 5to 6 pounds lower fuel pressure than the old one...I had this new in the packaging as I suspected a gauge problem last year...installed and adjusted to 46 and 52 with line off.I am a little higher than the 43 or 44#s as I was trying to figure out if a fuel starvation problem as I do not have a remote gauge on the cowl..
Car still has a bucking and popping and boost fluttering all over the place at wide open throttle...at 3/4 throttle everything ok..except when cold...the 1st time you get on it when around 160 sometimes no popping...after you get on it a few times pops every time no matter where in rpm range..
no apparant vacuum leaks or lines off...No codes on the scanmaster either..
Here are my scanmaster readings...af-04,lb27,sae-13.1-ine-128-bl-131-mph-0,cle-162,aes-107,r9-00,tps-.44,iac-00,cc-156 then 72 and all over the place,mal-0.Is my next step to buy a cowl mounted gauge to check fuel pressure while wot?
Wondering if this is the piece of **** new walbro pumps?have they solved the problem with these pumps yet????
any info appreciated.thanks!
also no more black smoke as a vac line was off on drivers valve cover to a square looking box near egr valve...