hi,
i need some advice on bleeding the fuel system on the merc sprinter van, its a 1997 5cyl cdi model with an injection pump. i cant see the normal syhpon type pump you get on some cars for bleeding, so all suggestions most welcome
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jambo,
I don't know what the system is like on these vans, but...
Some pumps, particularly Bosch rotary pumps are self bleeding. If you make sure that there are no air leaks in the fuel supply system, it should be ok.
With previous 'difficult cases', to help this process along, I have slackened the fuel inlet pipe to the pump, and using a foot pump, applied a tiny amount of pressure to the fuel tank. (The emphasis here is on tiny! less than 1 or 2psi ) If you then tighten the inlet pipe up, and apply the tiny pressure again, any leaks will be obvious! This gets the fuel up to the pump, which after that, looks after itself.
I hope this helps.
number_cruncher
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thank you number cruncher,
will try that tomorrow, do you (or anyone else) know where the stop solenoid is located on these?
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Why do you need to bleed the system? Has it been apart, run out of fuel or something else? Here's three other different suggestions for you. 1, Slacken off one of the pipes on an injector and crank it over to the diesel starts spurting out and thus most of the air will be removed. 2, Fire some Easy Start down the air intake, crank it over and it'll fire on the easy start and drag the fuel through at the same time. 3, When all else fails give it a tow start.
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is there a priming pump on top of the fuel filter housing,cant remember if this was on a merc or on isuzu but it is a plunger which you screw to release on top of the filter,let us know if you find it .cheers
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thanks lads, its supposed to be a self bleeding system so no priming pump. other have mentioned a need for bleeding at times as mentioned by simon and number cruncher. but its turned out that my problem relates to the stop solenoid electrical circuit. its actually registering as earth?? as far as i know its supposed to be live with ignition on. by applying live to it does click. so any info on the electrical circuit of the stop solenoid would be greatly appreciated.
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