vitesse
Active member
A little catch up on where we are with my friends car:-
After many hours over many months -I finally persuaded him that we couldn't get any farther in making it both reliable & stable without a fuel pressure test rig so a gauge set was bought off Ebay & we visited a local hydraulics stockist who made up the 2 appropriate connection hoses & supplied a T piece connector plus ball valve.
Connected it all up as required to find that system pressure was off the gauge ie over 7.5 bar -nothing I could do by tapping the relief valve area of the fuel distributor would alter things so removed the necessary fuel fittings & the spring retention plug-valve firmly stuck in place hard against the inside port.It was eventually removed by a lot of fiddling ,releasing agent & a suitably sized screwdriver blade which fitted inside the cylindrical valve plunger.
This week after my friend had cleaned up everything sourced a new tiny O ring for the valve,we re-assembled it all & tested again & now get 4.8 bar for system pressure (should be 5.2bar).When the ball valve is opened it drops initially but returns to the same reading(should be 3.2 bar)
This is Cold with Bosch plugs removed & using a relay bi-pass lead with switch.
So hunt is on for a Warm up (or Control pressure ) unit-before we tackle the lower pressure figure.
We have a spare fuel distributor but at present can't extract the shims from the retaining nut ( I suppose if all else fails we could drill a hole through it to poke them out & use whatever is fitted therein to increase the system pressure reading.
However ,did start the engine (with bi-pass still in place) & started easily & idled & allowed reving up so a big improvement.
Anyone got a warm -up unit for sale at reasonable price?
After many hours over many months -I finally persuaded him that we couldn't get any farther in making it both reliable & stable without a fuel pressure test rig so a gauge set was bought off Ebay & we visited a local hydraulics stockist who made up the 2 appropriate connection hoses & supplied a T piece connector plus ball valve.
Connected it all up as required to find that system pressure was off the gauge ie over 7.5 bar -nothing I could do by tapping the relief valve area of the fuel distributor would alter things so removed the necessary fuel fittings & the spring retention plug-valve firmly stuck in place hard against the inside port.It was eventually removed by a lot of fiddling ,releasing agent & a suitably sized screwdriver blade which fitted inside the cylindrical valve plunger.
This week after my friend had cleaned up everything sourced a new tiny O ring for the valve,we re-assembled it all & tested again & now get 4.8 bar for system pressure (should be 5.2bar).When the ball valve is opened it drops initially but returns to the same reading(should be 3.2 bar)
This is Cold with Bosch plugs removed & using a relay bi-pass lead with switch.
So hunt is on for a Warm up (or Control pressure ) unit-before we tackle the lower pressure figure.
We have a spare fuel distributor but at present can't extract the shims from the retaining nut ( I suppose if all else fails we could drill a hole through it to poke them out & use whatever is fitted therein to increase the system pressure reading.
However ,did start the engine (with bi-pass still in place) & started easily & idled & allowed reving up so a big improvement.
Anyone got a warm -up unit for sale at reasonable price?