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Posted

Hey guys. Got my new regulator but am after some guidance before I take the old one off. Although a replaceable part fixed with 2 torx screws, it appears to have been assembled as part of the fuel pump, and then painted with the pump.

 

The new one came with an O ring but no gasket. Once I crack the old one off what am I going to be faced with in terms of ensuring the new one doesn't leak? Will there be a gasket between the regulator and pump? Is it reusable? Is that O ring all I need?

 

I'm a bit hesitant as it doesn't look like it was ever meant to be parted from the pump once assembled.

 

Thanks

Posted

Ok I bit the bullet and just went for it! Here's what I found..

 

Original regulator was installed with a missing O-ring, but the black coating over the join to the pump stopped any leaks. Installing new regulator without O-ring resulted in leaking regulator.

 

Inner diameter of pump housing is 19.85mm. Regulator is 19.65mm, so a thin O-ring is required to fill that gap. I also used a small amount of flexible sealant between the body of the pump and mounting surface of the regulator. All good no leaks.

 

Points to remember...

 

1. OEM part 19338 ships without required O-ring. You will need to source your own.

 

2. Keep any sealant well away from the O- ring and regulator tip. Only use a small amount (gas / oil resistant) of flexible gasket sealant and allow to dry before running vehicle to check for leaks.

 

This is an easy job, requiring removal of the pump to rail fuel line, and plastic lines between the filter and pump. This gives enough room to swing a small ratchet with size 30 torx bit on the regulator screws.

 

Local workshop quoted me over $1600 to replace the regulator. I sourced it myself from UK for under £200 and had it fitted in under an hour.

 

Car now runs smooth at all throttle positions and so far no error messages or limp mode.

Posted

Thanks for posting, sometimes you do posts like this where you think you are on your own but many people do read them and learn from them so it is not a waste of your time.

 

As well as fixing the surging, has the anti pollution message also gone mentioned in your earlier post ?

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