At idle my fuel pressure is fluctuating it will go from 40 to 30 and up to 44 at idle this insnt normal is it? It used to stay right at 38 what should i look for?
At idle my fuel pressure is fluctuating it will go from 40 to 30 and up to 44 at idle this insnt normal is it? It used to stay right at 38 what should i look for?
88 Gt Vortech S trim 8 rib,Trickflow Track Heat Heads,Scorpion 1.6 rockers,cobra intake,Mac 70mm t.b.,pro m 80mm mass air ,30 lb injectors,Crane Hi 8 ign.,World class T-5,King cobra clutch,Fms 3.55 gears.Fms aluminum d.s.,Pro 5.0 shifter BBk subframes,Tfs phenolic 1 inch spacer,Frp 3 core radiator ,Cervini Stalker kit ,Cervini 4 cowl hood,chrome 4 lug Cobra r's,Walbro 255 lph pump ,T rex fuel pump,Ati fmu. 449.3 rhp @ 5500 rpms on a mustang dyno still running pig rich!!!
You should look for a Gray Capri RS that is going to bust your ***!!!
What kind of gauge? Mechanical or Electrical? Regulator might be going bad or it might be a faulty gauge.
Troy
1995 Mustang Cobra
302-10.77 @ 127.76
new motor being built
redsnk@yahoo.com
owner/moderator
http://www.stangtuning.com
its a autometer mechanical i dont think its the gauge though .The reason i say this is when i take the fuse out of my inline the pressire stays steady.Any other thoughts? Oh and Boner the gray capri damn sure doesnt want any of the black gt without one hell of a big shot! But if i dont get these damn fuel issues worked i guess iam fair game for just about anything
88 Gt Vortech S trim 8 rib,Trickflow Track Heat Heads,Scorpion 1.6 rockers,cobra intake,Mac 70mm t.b.,pro m 80mm mass air ,30 lb injectors,Crane Hi 8 ign.,World class T-5,King cobra clutch,Fms 3.55 gears.Fms aluminum d.s.,Pro 5.0 shifter BBk subframes,Tfs phenolic 1 inch spacer,Frp 3 core radiator ,Cervini Stalker kit ,Cervini 4 cowl hood,chrome 4 lug Cobra r's,Walbro 255 lph pump ,T rex fuel pump,Ati fmu. 449.3 rhp @ 5500 rpms on a mustang dyno still running pig rich!!!
If it is a mechanical gauge, then sounds like the regulator is taking a dump.
Troy
1995 Mustang Cobra
302-10.77 @ 127.76
new motor being built
redsnk@yahoo.com
owner/moderator
http://www.stangtuning.com
its a aeromotive less than 4 months old now iam not saying that its not possible but why the fluctuation when the inline is running
88 Gt Vortech S trim 8 rib,Trickflow Track Heat Heads,Scorpion 1.6 rockers,cobra intake,Mac 70mm t.b.,pro m 80mm mass air ,30 lb injectors,Crane Hi 8 ign.,World class T-5,King cobra clutch,Fms 3.55 gears.Fms aluminum d.s.,Pro 5.0 shifter BBk subframes,Tfs phenolic 1 inch spacer,Frp 3 core radiator ,Cervini Stalker kit ,Cervini 4 cowl hood,chrome 4 lug Cobra r's,Walbro 255 lph pump ,T rex fuel pump,Ati fmu. 449.3 rhp @ 5500 rpms on a mustang dyno still running pig rich!!!
you will get the fuel stuff worked out in time. good luck.
My car was losing pressure too, on the dyno. We found a faulty fuse holder to my T-rex was the cause, replaced it and it was good to go. Easy check with a test light.
What is your boost/vac gauge doing when this happens? If that is fluctuating then your fp will fluctuate. Is the idle steady or is it going up and down slightly?Originally posted by Blown 88 Gt
At idle my fuel pressure is fluctuating it will go from 40 to 30 and up to 44 at idle this insnt normal is it? It used to stay right at 38 what should i look for?
Eric
1990 Mustang GT
9.20 @151.18
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