From looking online though - none of the regulators look like mine, and I can't see the pressure written anywhere like it should be. Is this an OEM regulator?
Fuel pressure regulator
Moderator: martauto
-
kdevitt
- E30 Zone Regular
- Posts: 581
- Joined: Sun Feb 05, 2006 11:00 pm
- Location: Dublin
My touring is a 320i, Sep 89 built - but fitted with an earlier M20B25. Generally runs ok, but has a definite flat spot in acceleration and can be quite difficult to start sometimes. My first thought is the fuel pressure regulator - and the potential for the 2.5 bar one from the 2.0 engine to have been fitted up instead of the 3.0 bar one.
From looking online though - none of the regulators look like mine, and I can't see the pressure written anywhere like it should be. Is this an OEM regulator?
From looking online though - none of the regulators look like mine, and I can't see the pressure written anywhere like it should be. Is this an OEM regulator?
-
Brianmoooore
- E30 Zone Team Member
- Posts: 49359
- Joined: Mon Jan 10, 2005 11:00 pm
My car has two fuel pressure regulators - one for petrol and one for propane. That looks more like the propane one than the petrol one!
Never seen anything like that on an E30, although I'm not familiar with some of the very early stuff.
Never seen anything like that on an E30, although I'm not familiar with some of the very early stuff.
-
flybynite
- E30 Zone Squatter
- Posts: 1696
- Joined: Sat Dec 02, 2017 11:00 pm
My 325i is one of the early high compression engines, and it has the standard type FPR,
Nothing even on the old Jetronic 323i looks like that.
Nothing even on the old Jetronic 323i looks like that.
-
kdevitt
- E30 Zone Regular
- Posts: 581
- Joined: Sun Feb 05, 2006 11:00 pm
- Location: Dublin
Engine is from an 87 car, so wouldn't have imagined it to be too different. Glad I'm not going crazy - will order a new one. Thanks for the replies gents.
-
kdevitt
- E30 Zone Regular
- Posts: 581
- Joined: Sun Feb 05, 2006 11:00 pm
- Location: Dublin
New one ordered now anyway - bit of googling and it seems the one on there is a Malpassi regulator.
-
Brianmoooore
- E30 Zone Team Member
- Posts: 49359
- Joined: Mon Jan 10, 2005 11:00 pm
'87 engine definitely shouldn't have that on it. Does it get fed with fuel in the same way as the one that should be there? Bolt to the rail with an O ring seal in a sort of cup?
-
kdevitt
- E30 Zone Regular
- Posts: 581
- Joined: Sun Feb 05, 2006 11:00 pm
- Location: Dublin
Looks like it connects up like the correct one should alright - am guessing its all the local motor factors had available at one stage. Theres a fair whiff of petrol from the exhaust too, so hopefully this will go some way to resolving it.
-
kdevitt
- E30 Zone Regular
- Posts: 581
- Joined: Sun Feb 05, 2006 11:00 pm
- Location: Dublin
Bought a Piersburg regulator from Mister Auto and fitted it up today - definitely looks better! Had a minor win when I found exactly two of the bolts I needed in my box of brand new parts which I've ordered, but can't figure out what the parts are for.
Started up far easier than previously - idle was far smoother too. This is just after startup, sounds ok to me.
Started up far easier than previously - idle was far smoother too. This is just after startup, sounds ok to me.
-
Brianmoooore
- E30 Zone Team Member
- Posts: 49359
- Joined: Mon Jan 10, 2005 11:00 pm
Vacuum reference hose is on the point of failing where it pushes onto the regulator.
-
kdevitt
- E30 Zone Regular
- Posts: 581
- Joined: Sun Feb 05, 2006 11:00 pm
- Location: Dublin
You've got eyes like a hawk!!Brianmoooore wrote: ↑Fri May 22, 2020 6:43 pmVacuum reference hose is on the point of failing where it pushes onto the regulator.
Have a metre of the hose on its way to me.