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Join Date: Feb 2008
Location: Bayside Wi
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930 rich running fuel pressure

We are out of ideas. This 1978 930 has had 3 different regulators all set to factory specs. The last one was set up to adjust for the ever changing fuel pressure. After a short drive the car starts running very rich. We checked the flapper and cleaned and set all the recommended devices according to the factory manual that was published in 1970s. Any further developments since then? Has euro injection,Twin plug heads 1 bar boost etc. and generally use 108 octane leaded fuel. One good thing is no worries of burnt pistons.


Last edited by voitureltd; 03-03-2008 at 11:31 AM..
Old 03-03-2008, 11:05 AM
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plunger hanging up in the fuel distributor? return line obstructed? does it have the enrichment solinoid? If so could be trigering to fast.. I am assuming this is only off boost that you are having issues?
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Ben

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Old 03-03-2008, 11:13 AM
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also not familar with the second fuel pump not sure when that is suppose to run but I don't think it runs all the time but could be wrong
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Old 03-03-2008, 11:16 AM
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Both pumps always run together.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

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Old 03-04-2008, 12:44 PM
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Quote:
Originally Posted by NathanUK View Post
Both pumps always run together.
was not sure but thanks for clarifing

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Old 03-04-2008, 02:01 PM
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