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Leaking bosch VE fuel pump: Volkswagen 1.6 TD

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8tee8 Part of things Posts: 288	Leaking bosch VE fuel pump: Volkswagen 1.6 TD 8tee8 @8tee8
	Oct 2, 2014 9:07:52 GMT Select Post Deselect Post Link to Post Back to Top
	I recently bought a mk1 caddy with a 1.6td engine conversion. There was a few spots of diesel on the flier after running from day one but the leak has developed into a constant trickle when running. This was probably Not helped when I started using veg oil as I know this can damage seals. The fuel is coming from the bottom of the pump through the drain holes (I think that's what they are). Before I remove and strip down the pump does anybody know if the symptoms sound like I could get away with replacing just the main o-ring? Also the engine refuses to rev past a certain point. This equates to about 50mph in fifth gear but is the same in all gears. I have tried adjusting the idle and max fuel screws but this has no effect on the top end; the sensation is similar to a speed limiter cutting fuel and/or boost. Just wondered if this could be linked to the fuel leak? Thanks in advance to anyone who can help


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bortaf Posted a lot Posts: 4,549	Leaking bosch VE fuel pump: Volkswagen 1.6 TD bortaf @bortaf
	Oct 2, 2014 12:41:47 GMT Select Post Deselect Post Link to Post Back to Top
	Have you changed back to neat diesel yet? that can cure pump leaks? as the seal re expand ?
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8tee8 Part of things Posts: 288	Leaking bosch VE fuel pump: Volkswagen 1.6 TD 8tee8 @8tee8
	Oct 2, 2014 14:26:47 GMT Select Post Deselect Post Link to Post Back to Top
	Yes I've run straight diesel through it but it's coming out at the same rate


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cobblers Posted a lot Posts: 3,921	Leaking bosch VE fuel pump: Volkswagen 1.6 TD cobblers @cobblers
	Oct 2, 2014 16:25:22 GMT Select Post Deselect Post Link to Post Back to Top
	Apparently you can get away with just the O ring. You probably had a slight weep on diesel but the veg doesn't evaporate and the higher pressures exacerbate any leaks. Mine was better when I went back to dino but in the end I just changed the pump for a £50 ebay one. You can change the pump head seal without removing the pump from the car if you get a special nitrile/viton one and an extended bolt to allow you to slide the head off just enough without all the innards collapsing. The pump has to be in the correct rotation to do this as well.


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rodney Posted a lot https://www.facebook.com/RD-vehicle-transport-and-recovery-services-525622614268010/ Posts: 1,677	Leaking bosch VE fuel pump: Volkswagen 1.6 TD rodney @mrrodney
	Oct 2, 2014 18:27:39 GMT Select Post Deselect Post Link to Post Back to Top
	check the boost compesater too , as the rubbers curse word themselves causing major power loss and surging,.
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Deleted Posts: 0	Leaking bosch VE fuel pump: Volkswagen 1.6 TDDeleted @Deleted
	Oct 2, 2014 18:54:22 GMT Select Post Deselect Post Link to Post Back to Top
	Id try checking the stop solenoid regarding the lack of revs, I had some trouble with my stop solenoid a yesterday, Revved when starting, lack of power etc.. Cleaned it up and re-fitted it , and its better than ever!


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8tee8 Part of things Posts: 288	Leaking bosch VE fuel pump: Volkswagen 1.6 TD 8tee8 @8tee8
	Oct 14, 2014 11:12:37 GMT Select Post Deselect Post Link to Post Back to Top
	Thanks for the replies, I will look into the stop solenoid issue. Where abouts is the boost compensator by the way?


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