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Engine Specific Info and Questions => IDI Engine => Topic started by: Gator79 on April 16, 2017, 10:04:49 am

Title: Fuel filter location
Post by: Gator79 on April 16, 2017, 10:04:49 am

Does it matter if the fuel filter is above or belove the injection pump?

Title: Re: Fuel filter location
Post by: ORCoaster on April 16, 2017, 12:03:48 pm

For most of the Rabbits and such that I have seen the filter is below the IP on the fender.  Fuel is drawn up to the IP.  Not sure about vans.  I am unsure if you would have a problem mounting it above the IP.  My question is where would you find the room to do that?

Title: Re: Fuel filter location
Post by: vanbcguy on April 16, 2017, 03:37:55 pm

It'll be fine as long as it isn't TOO high above. If you're mounting it to the roof you might have issues.

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Title: Re: Fuel filter location
Post by: TylerDurden on April 17, 2017, 06:02:23 am

Doesn't matter much. Once the system is full, there is as much downward pull as upward pull. 

Title: Re: Fuel filter location
Post by: ORCoaster on April 17, 2017, 08:08:43 pm

Have you any idea what the vacuum pull in on the inlet of the IP?  I was thinking it was rather low like 3 lbs or so. 

Title: Re: Fuel filter location
Post by: TylerDurden on April 18, 2017, 05:03:03 am

IDK, but I rekon it's gonna be close to the resistance of the filter, plus the height above the tank (~20" h20, which is less than 1psi, if you want to measure in negative psi).

Title: Re: Fuel filter location
Post by: kljaja on April 18, 2017, 08:32:04 am

I have it mounted next to downpipe on a firewall between downpipe and servo drum, as high as possible, works nicely