Fuel System Clogged To Shit

[GH05T]

OK so any of you that know me know i have had issues with my car on boost, these were all boiled down to fuel delivery issues.

my car was cutting out round corners and running lean on the dyno over 5000rpm, anyway the culprite was my BOSCH 040 intank fuel pump, it was extreamly clogged, the mesh cover was caked and the filter was clogged, so i replaced it with a new one.

this one has been in my tank for about 2 months and it has fallen to the same fate, unfortunatly the Bosch pumps do not have a servicable filter and i assume the internals have been damaged anyway as the pump has become noisy again.

so im going to replace it AGAIN with something different, just for funzies. anyway obviosuly my tank still has shit in it.

i could get the tan kcleaned and try again but i am sick of going through pumps. i do not know if its just debris in the tank or if its rust from the old tank. SO

i have sourced a GTR plastic tank W straps, i still need a sender,

1st question......

with the larger GTR tank and new sender unit, what is involved in getting this to work with my stock guage?

i have also sourced some new gtr injectors (i already have these installed but they might be farked) new ones have been flow tested and cleaned....

what else appart from the fuel filter should i replacein the fuel system? any lines, any bottle neck which may have been affected by the crap going though my system?

[DVS JEZ]

Are u sure crap has gone through the system or just in the pumps filter and possibly fuel filter?

Mates 34 did the same thing. He ran the fuel in the tank through a fuel filter and into some jerry cans a few times to remove the debris from the tank. Hasnt played up since

[GH05T]

well i have destroyed 2 fuel pumps, while i have half the system out i might aswell replace anything else i can, dont want to lean out pushing 1bar boost at 6000rpm again, bad sensation when it chokes

[DVS JEZ]

Yes i agree its bad. I dont feel the lines would be clogged but maybe check they flow ok When ur done

[StevenCJR31]

just take you existing fuel tank out-clean out with caustic soda and refit, flush out lines as required

[GH05T]

worried about the possibility of rust in tank......also already have plastic gtr tank

[jhjones]

I found this thread:

http://www.skylinesaustralia.com/forums/topic/272744-r32-gtr-fuel-tank-in-r32-gtst/

[KURTIS34]

Just cut the mesh out the bottom of the 040

Pump

And Just replace filter a lot more often.

[GH05T]

No offense but that

Seams like the worst answer. I'm happy to get a new pump and tank, do it properly, I'm even getting cleaned and flow tested injectors incase their not %100, why would I just keep going through pumps at $200 a pop and get rid of filters? I don't want old tank crap getting past the filters I want their to be no crap.

[Kinkstaah]

Are u sure crap has gone through the system or just in the pumps filter and possibly fuel filter?

Mates 34 did the same thing. He ran the fuel in the tank through a fuel filter and into some jerry cans a few times to remove the debris from the tank. Hasnt played up since

I have a R34 with the same issue as the OP - Except I've gone through pumps in as little as uh, one day.

I was able to take the pump out, clean the mesh with it (Bosch 040) and put it back in and suprise suprise, it actually worked...

...until today, where it is again groaning and carrying on.

The above solution from Jez sounds like it's something to try, at $200 a pop, I can't afford a new pump every couple of days, but I CAN afford to buy like five fuel filters and some jerry cans and pump the tank through them and rinse/repeat instead of obliterating the mesh in the pump and killing pumps over and over.

Just cut the mesh out the bottom of the 040

Pump

And Just replace filter a lot more often.

While this sounds like the ultimate backyard fix, um.. would this actually work? Any thoughts? Its much, much, much easier to replace a filter in the R34 than the pump. (and especially the tank)

How often is often? 5k kms? Or is this option just madness?

Happy to do either or both, really, really tired of replacing fuel pumps.. twice a week.

[StevenCJR31]

just take you existing fuel tank out-clean out with caustic soda and refit, flush out lines as required

just do this ! ^^^^^^

[Kinkstaah]

Seriously. It is an utter bastard on the R34. So much so I'd almost rather spend $1200 on fuel pumps lol. I'll try the filter and jerry can thing and post here just incase some poor soul has this problem and searches the forums and finds this (like I did)

[KURTIS34]

While this sounds like the ultimate backyard fix, um.. would this actually work? Any thoughts? Its much, much, much easier to replace a filter in the R34 than the pump. (and especially the tank)

How often is often? 5k kms? Or is this option just madness?

Happy to do either or both, really, really tired of replacing fuel pumps.. twice a week.

I removed the mesh on 040 worked well for me

No issues I did a filter on every service

5000kms

Just comes down to what your prepared to do

I cut mine off as I got sick of pulling pump to clean it.

[Kinkstaah]

Dare I ask what the best way of removing this is? I tend to replace the fuel filter when I replace the oil filter anyway (i.e every 5k kms), because it's .. right there, and costs like $10.

I've only cleaned the pump out, but never really attempted to cut the mesh.

[GTSBoy]

Why doesn't everyone just fit a decent sock to the pump? It's not real hard. I have the original sock attached to an 040 in R32.

[Kinkstaah]

Would this not just.. clog the sock?

[simpletool]

Cant' you flush the tank while it's in the car ? Pull the lines out the bottom and bung up. fill the tank with a suitable solvent (I'm going to say ethanol) - but REMOVE the fuel pump first !!!!

[Kinkstaah]

My weekend will be spent doing everything humanly possible sans removing the tank from the car.

Willing to try anything, any other suggestions for suitable solvent?

[GTSBoy]

Would this not just.. clog the sock?

No, the sock flaps around and shakes the crud off. That's the whole point of a floppy filter.

[WMDC35]

Jenolite