quick-fuel carb problem on a 460
#1
Join Date: Jul 1997
Location: Beautiful Hueytown Alabam
Posts: 5,668
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quick-fuel carb problem on a 460
1975 460ci from Lincoln Mark IV
Smog head but thermactor hump removed and exh ports smoothed
Drilled for 7/16 studs and using 1:73 roller tip rockers
Heads decked to flat
Fed Mogal H535P flat top pistons
Comp 252 cam
Comp ration 9:1 calculated
Edelbrock 1726 fuel pump 3/8 line 7-8# fuel pressure
Quick fuel hr-650 4 barrel mechanical secondaries
Edelbrock performer intake
First start, carb flooding…floats set too high… corrected.......Now have fuel dripping from venturies into throat…Can’t seem to get it stopped
Engine runs smooth with quick throttle response, no hesitation
But something is making fuel leak and we can’t find it
Open to any suggestions
john
Smog head but thermactor hump removed and exh ports smoothed
Drilled for 7/16 studs and using 1:73 roller tip rockers
Heads decked to flat
Fed Mogal H535P flat top pistons
Comp 252 cam
Comp ration 9:1 calculated
Edelbrock 1726 fuel pump 3/8 line 7-8# fuel pressure
Quick fuel hr-650 4 barrel mechanical secondaries
Edelbrock performer intake
First start, carb flooding…floats set too high… corrected.......Now have fuel dripping from venturies into throat…Can’t seem to get it stopped
Engine runs smooth with quick throttle response, no hesitation
But something is making fuel leak and we can’t find it
Open to any suggestions
john
#3
#4
Join Date: Jul 1997
Location: Beautiful Hueytown Alabam
Posts: 5,668
Received 727 Likes
on
259 Posts
thanks Ted.. I've ordered a new (better) fuel pressure gauge. that was my first suspicion. The current gauge is fluctuating between about 6-8 #s and is hard to get an accurate read on it. It's supposed to be here Thursday and I'll start from there. Another suggestion was blocked air bleeds so some carb cleaner thru those might help. Still not ruling out the needle/seat although they look clean and undamaged... more to come !
Thanks Mark... next time it's off, I'll try that
john
Thanks Mark... next time it's off, I'll try that
john
#5
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