Ever since my incident with the fuel line popping off of the fuel rail adapter I've had a variety of problems: fuel pressure gauge going off kilter, the occasional whiff of gas upon start up and now the Walbro is giving off a high pitched whine. Its very noticeable outside but inside you can hear it until you turn the radio up.
Should I be concerned about the Walbro at this point?

 

Did you hard wire it?

 

Not sure what you mean here, SPig. I swapped out the stock fuel pump in the tank.

 

He means run a new wire directly from the battery to the pump using a relay to activate it.

My Walbro has always put out a whining noise. Not deafening, but definitely audible and kind of annoying. Though still it worked great for the year I ran it.

 

Sorry but I don't understand why hardwiring would make a difference here.

 

Usually to avoid voltage drop and the subsequent fuel delivery drop... I wouldn't worry about it unless you are putting down a lot of power... I'm still on the factory wiring with a 3.12".

Is the whine while you are at almost empty or on a full tank of gas? A new GSS342 pump is pretty cheap so it may be cheap "insurance"... I'm still on my original one.

 

I just topped up the tank last night. I could hear it with a full tank and half a tank.

I did some searching and reading on other sites and the conclusion is that noisy Walbros are very common.

 

Definately common for Walbros to make noise. A brand new Walbro was installed in Mike's car, and his buzzed zzzzzzzzzzzzzzzzzzzzzzzzzzzzzz right away.

 

yep, mine has a very very loud ZZZZZZZZZZZZZZZZZZ noise from passenger rear. overtakes the exhaust.

 

Mine was always quiet... I put a LP version in my friend's Avenger (also DSM version) and it was noisy as heck... I guess I got lucky.

 

My W255 is very quiet - only noticeable outside of the car.

 

I listened to the noise last night and it sounded similar to a tea kettle rather than a bzzzzz. After a closer inspection to locate exactly where the noise is coming from I think its an exhaust leak in the b-pipe connection.

 

Have someone "key on" the ignition and listen to the fuel pump for the 2 second priming period... Hopefully it just a loose hanger...

 

My 255 was very loud when it was at lower voltage (due to the car's fuel pump control module), I bypassed the FPCM and whining sound went alot lower, but walbro's are known to be a bit loud anyway. i wouldnt worry unless your fuel pressure is not consistant or holds pressure at idle. mine wasnt able to hold certain pressure at idle with vacum removed from it because the FPCM was providing too low of voltage to it.

 

I had a Walbro in my GTP. It was loud. Kinda like a good loud. One day it started whining like a cat. It died shortly afterwards.

Good pumps, but they dont last long.

 

When hard wired (i.e. getting over 12v) they tend to run longer and pump more. I recommend always hard wiring them. I am sure they take a lot more current than the stock pump and still force that through the puny stock wiring.

 

Mine was hard-wired. The stock tank pickup on the GTP wasnt really designed for a Walbro. ZZPerformance designed a VENTURI PUMP mod that was supposed to prevent fuel starvation (the pump mounts in a module that looks like a plastic can). It didnt really work in my opinion. Whenever I had less than a 1/4 tank, the pump would starve for fuel on hard corners. I think this took its toll on the pump. I run a factory pump now. The factory pump is good for 400whp on the GTP's.