Fuel pressure problem
Turbo Mini Forums

Having fitted a gunsons lo-guage to carb fuel inlet hose to check fuel pressure, i can only get a constant reading at 2.5-3psi. When the regulator is adjusted to anything over this the fuel pressure is very erratic. I have replaced the diaphram in the regulator and cant see anything else on them that can cause a problem, there are no restriction in my return line and i run 8mm feed and 10mm return. I have two 8mm outlets from tank, these then pass through filters and then connect to a t-piece with a 12mm outlet to supply pump. Both filters seem to have air bubbles in them- is this normal?? Also when the fuel pressure is going mad the fuel returning to the tank surges back in rather than a nice constant flow. Any ideas??

T3tone.

-MINI CLUBMAN 1380 TURBO-

sounds like the pump to me if your sure everything else is fine.

i had one pump go lik this, chucked a brand new one on and it went away.

if your stuck for a pump i can do new ones at a good price. try anything else though first as the pump is really the most expensive bit!

Edited by iain on 12th Feb, 2005.

Cheers iain

Just gave FSE a call and they too say it could well be the fuel pump surging!!

I have a rolling road booked 1st thing tuesday morning so need to get one local, but thanks for offer.

Does anyone know of a part number (bosch,lucas etc) of a suitable pump. I have no idea what my pump is off, it has got 12mm input and 8mm output, both just straight pipes (no banjo type fittings) so would be handy if they are the same.

T3tone

-MINI CLUBMAN 1380 TURBO-

according to a dude who sells em on ebay the MG-Rover part number is AUU1649

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...4525699081&rd=1

this dude sells em quite often aswell
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...7953751141&rd=1

HTH, Nick.

Could be the filters. If they are a bit blocked up they could cause you trouble. You can also get fuel vapour entering your pump if they aint flowing to well.

I'll have some fuel pumps that i'll be able to let you guys have at a very very good price soon. Should be sub ?50

ive got the new bosch number somewhere. bascially the rover part that lucas rebadged then sold to rover! lol!

if you get stuck give me a shout.

Got this problem sorted now, air in the fuel line from regulator to guage. I held the guage below the level of the regulator, tapped the regulator until all the air escaped and got me constant fuel pressure back. Surprised no one else has had this happen before but it was probably me being a dip s*it.

ps Thanks to all for help and sauber 200 for putting me in the right area.

Regards T3tone.

-MINI CLUBMAN 1380 TURBO-

what about me for supplying you a spare pump!!!!!!!!!!!! lol.

glad you got it sorted mate.

always looking for them bigger bunches of bannanas

at least you saved some money not having to buy a new pump,