Fuel leak engine bay

[mattjewell]

I've been experiencing a fuel leak coming from the engine bay area and noticed a leak right behind the drivers side door under the car.

It was leaking before by the FPR and it was a hose that had failed where the clamp was because it was too tight. Cut off about an inch of the hose and reclamped it. Problem was fixed for a while.

Now I've got another leak, doesn't appear to be by the hose that I cut and reinstalled. Kind of hard to tell exactly where it's coming from, but it's definitely leaking.

I was thinking about replacing the fuel rail, injectors, hoses and fuel filter to see if this would fix the leak. Maybe overkill but definitely doesn't hurt (needs to be done anyway).

Is it required to pull the manifold to remove the fuel rail? Any tips? Or DIY's?

Any help would be appreciated!

[cabriodster87]

Remove valve cover to access fuel rail.

Dont worry about overkill when it concerns flammable stuff, be careful and have a fire extinguisher on standby when you work on it.

[mattjewell]

Remove valve cover to access fuel rail.

Dont worry about overkill when it concerns flammable stuff, be careful and have a fire extinguisher on standby when you work on it.

Sounds good and great advice. Do you recommend a certain injector? I saw them on ECS and they're like $120 a piece.

I've also seen the Bosch for all six for significantly cheaper.

Found the fuel rail for $54 which isn't bad.

[mattjewell]

Would these work?

http://www.ebay.com/itm/2-5L-I6-325i-325is-325iX-BMW-Genuine-BOSCH-Fuel-Injector-Set-Upgrade-4-Nozzle-/271205156816?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A1989%7CMake%3ABMW%7CModel%3A325i&hash=item3f251647d0&vxp=mtr

[BMWManiac]

There is a forum member that rebuilds them....if you can deal with not having the e30 driveable, send him your injectors

[mattjewell]

There is a forum member that rebuilds them....if you can deal with not having the e30 driveable, send him your injectors

I definitely PMed him to see if he has any extras for sale. Don't necessarily have the time to take the existing out and have them re built.

[BMWManiac]

I'm sure he does and wouldn't be a bad idea to charge a "core" charge until he gets yours

[mattjewell]

So here are the parts I'm going to order:

FPR: http://www.ecstuning.com/BMW-E30-325...uel/ES2226058/

Fuel rail: http://www.ecstuning.com/BMW-E30-325.../Fuel/ES33524/

Fuel filter: http://www.ecstuning.com/BMW-E30-325...uel/ES2706648/

Any recommendations on hoses to buy?

O-rings? If I'm buying re built injectors, what O-rings will I need?

[BMWManiac]

Go to NAPA and buy fuel injector hose (I forget about how many meters you need, maybe 3?) and injector o-rings.....you don't need to buy these online

[turbo55]

you probably don't need new injectors, just get yours professionally cleaned. I got mine done by MEPEH, did a great job; $5/injector includes the cleaning + new seals + new pintle caps

http://www.r3vlimited.com/board/showthread.php?t=266477

[mattjewell]

you probably don't need new injectors, just get yours professionally cleaned. I got mine done by MEPEH, did a great job; $5/injector includes the cleaning + new seals + new pintle caps
http://www.r3vlimited.com/board/showthread.php?t=266477

PMd him too. Good looking out

[jayuuey]

+1 on MEPEH. Just buy a reconditioned set and then send your old ones back after install.

[mattjewell]

Yup! That's the plan.

Is it a possibility that the fuel rail itself is leaking? Does it make more sense to replace injectors and the fuel hoses, opposed to buying a whole new rail?

[BMWManiac]

From my experience, there are only two places that you'll find a leak in the rail:

1) The injector is not seated properly or the seal is installed dry and tears when installed into the rail itself

2) The thin arm that connects the fuel line to the fuel rail has a crack because someone stressed it enough, maybe trying to bend it out of the way

[mattjewell]

Well for only $54 it may not be a bad idea to replace it. I know the injectors come with the o-rings already installed, but what about the rail? What o-rings will I need for the rail?