Hpfp problem

[Adamj]

Hi guys I had a hpfp internals fitted by Amd about 3 months ago, recently it a stage 2+ map by (rick at unicorn) top guy, anyway I was driving my car today and all of a sudden I lost power, pulled over as I was on the m1, and there was oil everywhere looked at my pump and all 3 bolts have completely snapped off, I managed to get it home, and noticed a little black bit had snapped off on the pump, what would have caused this? Il try and get pictures up later

 

[TDI140]

Kind off need to mention what car it is what engine etc etc

 

[voorhees]

You drove it home with the fuel pump knackered ? Did you change the cam follower when upgrading the insides ?

 

[Adamj]

Sorry guys its a 2007 s3, eah the cam follower got replaced, the bit that snapped off seems to be off the top of the pump there's a little circular plastic which Half has snapped off

 

[voorhees]

Heres a pic

 

[Adamj]

Yeah that's the one all 3 bolts snapped off what would have caused?

 

[voorhees]

Who fitted the pump ?

 

[Adamj]

Here's some pictures

 

[Chillout]

Yeah that's the one all 3 bolts snapped off what would have caused?

Maybe the pump seized and was forced off did it pop the heads off the bolts or shear them
or suppose it could have come up against resistance maybe the internals broke up.
was typing as you put the pics up was it over tightened when fitted looks like you will need easy outs to remove them

 

[voorhees]

Hopefully it was overtightened and not an internal failure,good call chillout

 

[Adamj]

Il have to send to amd to check t out as I have no idea if any damage was done due to internals possibley failing

 

[Adamj]

How would over tightening make the bolts snap?

 

[Chillout]

How would over tightening make the bolts snap?

Yes it could do especially as the are flush if a bolt for example was to snap at the back of a nut it would be due to all the tension being on the first thread.

 

[voorhees]

How would over tightening make the bolts snap?

Overtightening

 

[Kelza]

Who fitted the pump ?

?​

 

[Adamj]

Amd in Essex fitted it

 

[Kelza]

Wow

 

[Chillout]

Wow

I think the bolts should be tightened to 10 NM and I think the kits come withe new bolts too.

 

[Adamj]

Well il have to get some new bolts during the week but I want to send the pump there to check to see if the internals are ok

 

[Kelza]

Hi adam hope you get it sorted ...

 

[Adamj]

Hi adam hope you get it sorted ...

Cheers mate so do I .... I have heard a few horror stories about internals would it be worth getting the apr or loba complete pump?

 

[Kelza]

Hi adam i had the autotech from new with no problems in just over a year ,but i do hear good comments about the loba uprated pump....