My TD Xantia (Bosch fuel pump, no keypad) refused to start one morning - after checking fuel supply, listening for solenoid operation etc found that there was no fuel coming out the injector pipes. The AA man said that the lift pump had broken.
I have now got the car home and have replaced the pump with one exactly the same (leaving the pump sprocket in place) - just a straight swop - however the car will now only just about run with the throttle held open, and produces clouds of white smoke.
The timing is fine, I've checked the flywheel, camshaft and pump timing using pegs and its all ok, rotating the pump has no effect.
The car was running just fine before it broke down. When I tried this pump on a bx previously it did exactly the same in terms of producing smoke etc
I'm now stuck - does anyone know of a site where I can find more info about bosch fuel pumps? Are there any settings on the pump that I can adjust? Is the pump with broken lift pump worth getting repaired?
Any help appreciated
Cheers Gavin
Bosch fuel pump Probs
Moderator: RichardW
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Jon
Hi Gavin.
From what you are saying, then the replacement pump that you have fitted must be crook in some way if when fitted to the BX it gave similar problems to when fitted to the Xantia.
Are you happy with the AA blokes diagnosis of the original pump? Its certainly unusual unless the mileage was interstellar. Maybe Dave Burns can comment or advise on this? Maybe an idea to get it checked over by a diesel injection specialist now its off the car?
The other option of course is a known good second hand pump from a ZX or Xantia.
Finally, this site http://dodgeram.org/tech/dsl/more_power/Power_ve.htm gives some details on the Bosch VE pumps. Although the site relates to Dodge trucks its exactly the same pump.
Jon Wood
forum@andyspares.com
From what you are saying, then the replacement pump that you have fitted must be crook in some way if when fitted to the BX it gave similar problems to when fitted to the Xantia.
Are you happy with the AA blokes diagnosis of the original pump? Its certainly unusual unless the mileage was interstellar. Maybe Dave Burns can comment or advise on this? Maybe an idea to get it checked over by a diesel injection specialist now its off the car?
The other option of course is a known good second hand pump from a ZX or Xantia.
Finally, this site http://dodgeram.org/tech/dsl/more_power/Power_ve.htm gives some details on the Bosch VE pumps. Although the site relates to Dodge trucks its exactly the same pump.
Jon Wood
forum@andyspares.com
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Dave Burns
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Presumably the engine was operating with no problems the last time it was switched off as you don't say there were any prob's, so the lift pump was ok right up to that moment, so when if at all, did it break?
The VE lift pump is just about bullet proof, being of the sliding vane design, e-mail you a pic. if you want.
Its easier to find rocking horse shyte than a broken VE pump.
What did the AA man do to eliminate the stop solenoid and possible air leaks from the equasion, he should have unscrewed the solenoid and removed the spring and plunger then put it back, if that wasn't done you can't be sure of the solenoid, simply listening for it clicking isn't good enough to discount it, the winding can cause intermittent open circuit faults.
If there are no air leaks, the priming bulb should feel firm at the first squeeze.
Either way if the lift pump was at fault (unlikely), it should still start with vigourous operation of the hand primer while being cranked, was that tried.
As for the other pumps antics, what are you getting in terms of fuel quantity at the unions.
Dave
The VE lift pump is just about bullet proof, being of the sliding vane design, e-mail you a pic. if you want.
Its easier to find rocking horse shyte than a broken VE pump.
What did the AA man do to eliminate the stop solenoid and possible air leaks from the equasion, he should have unscrewed the solenoid and removed the spring and plunger then put it back, if that wasn't done you can't be sure of the solenoid, simply listening for it clicking isn't good enough to discount it, the winding can cause intermittent open circuit faults.
If there are no air leaks, the priming bulb should feel firm at the first squeeze.
Either way if the lift pump was at fault (unlikely), it should still start with vigourous operation of the hand primer while being cranked, was that tried.
As for the other pumps antics, what are you getting in terms of fuel quantity at the unions.
Dave
Did you set the pump up with a Dial Test Indicator?? Although you had the pump sprocket locked with a peg, the pump itself still needs to be set up! If the pump timing is even a few degrees out you will get the poor running/starting you described.
There is a cam inside the pump that needs to be set up, it will cost about 30-40 quid for a basic pump adapter and DTI. If you have already done this I apologise, and good luck to you.
There is a cam inside the pump that needs to be set up, it will cost about 30-40 quid for a basic pump adapter and DTI. If you have already done this I apologise, and good luck to you.
Oh dear - will go back and check the solenoid on the original pump on the Xantia, will swop it out with another one from one my collection of pumps that don't work properly. I'll see what happens.
It seems at the moment I have three Bosch pumps that don't work (one doesn't work at all, the other two run but very badly - the pump repair people want £90 to test the pumps. The guy at the repair place couldn't suggest anything other than the timing being wrong on the two (working pumps) Think I have been very unlucky to have bought two 2nd hand Bosch pumps that don't work properly, unfortunately it was too long ago to take them back now.
I'm reluctant to buy a dial test indicator as this isn't a minor timing error - I've experienced what these pump are like if you try and run them one tooth out - but this is worse, much worse than that.
In my previous experience with CAV pumps you just turn the until they start and run at their best and thats that. So a CAV pump may be the answer!
Gavin
It seems at the moment I have three Bosch pumps that don't work (one doesn't work at all, the other two run but very badly - the pump repair people want £90 to test the pumps. The guy at the repair place couldn't suggest anything other than the timing being wrong on the two (working pumps) Think I have been very unlucky to have bought two 2nd hand Bosch pumps that don't work properly, unfortunately it was too long ago to take them back now.
I'm reluctant to buy a dial test indicator as this isn't a minor timing error - I've experienced what these pump are like if you try and run them one tooth out - but this is worse, much worse than that.
In my previous experience with CAV pumps you just turn the until they start and run at their best and thats that. So a CAV pump may be the answer!
Gavin