Hi Eric
Yeah thanks for reply, appreciate it
Today I pulled all other 3 plugs and they're all the same, Sooty! (NO surprise!).
I applied vacuum to the fuel rail regulator and it held vacuum for 4 hours so I guess the diaphragm is ok?.
I removed the Throttle valve and looked down into plenum to see if fuel had pooled from a dodgy cold start injector, but no, there was some oil in
there I guess (again!) it's from the PCV hose?.
The twin tank return lines are clear, I applied 12volts to the fuel pump and could clearly see what little fuel there was left falling into the tanks with
both filler caps removed ( alarmingly, with little fuel in the tanks the returning fuel falls about 500mm to the base of tank and foams really badly
not sure how the injectors deal with this frothy liquid
or how it would affect fueling ? it would certainly explain the pumps change in tone if it's
pumping foam !).
I intend to check resistances of Injectors, cold start valve, bypass valve, CTS, and TTS this week, but have no figures for reference? I have found
conflicting figures online but nothing that correlates what I have recorded on previous tests
.
I hope my choice of alternative alternator isn't the cause? The alternator charge light in the Hawk is within the Fiat 124 Speedometer gauge and
when the original Bosch unit failed the warning light came on along side a drop in the voltmeter (Fiat 124) then I swapped the alternator and used
the original Beta alternator pulley wheel (straight swap
) so that rotational speed was the same, the warning light went out soon after fitting but
on a drive it illuminated once more but the voltmeter remained/remains at approx 14 volts ? (headlights on).
I hope I get to the drop the oil stage Eric I really do, very sound advice indeed
in the meantime I'll go through everything else I know and report
my findings for advice and perhaps direction?
Thank you again Eric for the swift reply
Kev.