Hi there,
when I was at Shakespeare county for that drag round, my car was misfiring in 3rd when it got up to around 5k rpm in 3rd (fine in 1st two gears)
I guessed it was down to fuel pressure (my pump was always marginal, and I'd just upped the idle jets).
I thought I'd proved the problem by sticking a pressure gauge betweeen carb 2 and 3 (per attachment)
and seeing the fuel pressure collapse to nothing on full throttle in any gear.
I bought a new pump, claiming to be a facet red top clone 12 Volt Electric , Electronic Fuel pump , | eBay and got a petrol king fuel regulator (this is what attached photo is actually of)
I was expecting with this to see a constant 2psi all the time, but I don't - its better than the old one, but fuel pressure falls by the time I've changed gear once at full throttle.
(no misfire though)
Eventually I get to a question!
Has anyone got experience of checking fuel pressure like this with a real facet red top? how does it behave? my Des Hammil book says it is possible to get constant 2psi under all conditions.
engine is a L24 with triple dellorto 45s, about 170 fw bhp.
Thanks!
Jon
when I was at Shakespeare county for that drag round, my car was misfiring in 3rd when it got up to around 5k rpm in 3rd (fine in 1st two gears)
I guessed it was down to fuel pressure (my pump was always marginal, and I'd just upped the idle jets).
I thought I'd proved the problem by sticking a pressure gauge betweeen carb 2 and 3 (per attachment)
and seeing the fuel pressure collapse to nothing on full throttle in any gear.
I bought a new pump, claiming to be a facet red top clone 12 Volt Electric , Electronic Fuel pump , | eBay and got a petrol king fuel regulator (this is what attached photo is actually of)
I was expecting with this to see a constant 2psi all the time, but I don't - its better than the old one, but fuel pressure falls by the time I've changed gear once at full throttle.
(no misfire though)
Eventually I get to a question!
Has anyone got experience of checking fuel pressure like this with a real facet red top? how does it behave? my Des Hammil book says it is possible to get constant 2psi under all conditions.
engine is a L24 with triple dellorto 45s, about 170 fw bhp.
Thanks!
Jon