mcmike

Ok, I'm doing a simple Direct Fit LS-1 Walbro 255.Drop the tank,install,primes....no start.I can hear the pump run but no start.I install a fuell pressure gauge on the fuel rail,prime.........no pressure.I call Full Throttle and Mike is very helpfull,surmises I probably mixed the power and ground...F'd Up.Says the pump will run in reverse,that's why I'm hearing it but no pressure.Pull the tank again look at the red and black wires,compare to the diagram....looks perfect.Put the pump and bucket in a container with a gallon of fuel,pull the connecter of the top of the bucket put a + and - from a 12 volt battery to the perspective red and black to verify and it pumps fuel like crazy.No fuel lines off,wireing looks right.Put the pump and bucket back in tank,install tank (half way)plug fuel lines,and electric connections.Turn the key hear the pump prime,no fuel pressure ! Prime it 5 time in a row....still no fuel pressure at the rail.Pulled the connection at the filter,let the fuel line hang,prime and crank the engine....hear the pump run but not a drop of fuel.Just dropped the tank for the third time,frustrated and don't know what to do.Contemplated switching the wires even though they look and perform(out of the tank) correctly.What sucks is I installed Kooks Headers,Y with Cats and GMMG CatBack and can't even enjoy it for a week now because the bitch won't run.I'll take any suggestions,tomorrow I plan on switching the wires...........HELP !

94blownz281

iTrader: (12)

i had two walbro pumps go bad on me and i'm on my third one... one lasted acouple months then started acting up. other one had something wrong with it from right out of the box. i have read alot of problems with these pumps over the past year. i have not used the new pump more then maybe 50miles and i'm rebuilding the motor right now.

Lurius

iTrader: (7)

Try switching the wires, worth a shot.

-Lurius

ramairws6

iTrader: (33)

He's right.......switch the wires and you'll be good to go.Had the same issue and that's all it was.Traver

ArcticZ28

iTrader: (14)

Do not let your car run for very long with that little amount of gas in the tank. These pumps will take a sh*t way early as they're cooled by the gas (and therefore, running the tank low causes them to quite often overheat and burn up).

Country Boy

iTrader: (24)

check the hose in the tank for cracks/ breaks... I blew up the little S hose that comes with it.

THE_SUPRA

def a wiring issue :/

mcmike

Switched the wires and she's fixed.What sucks is I followed the diagram in the instructions to a T.I had a couple of people look how I had it per the Picture in Full Throttles instructions to verify I had the red and black correct.Took some digital photos too.Well anyway,fired right up and the KOOKS Headers and GMMG exhaust sounds perfect,nice idle and awsome under WOT.Thanks for those who tried to help.

BrianC98Z28

iTrader: (11)

yeah be careful of running it low. I just burned mine up by doing that. I needed to upgrade anyways but now i fill up before it gets to E.

Tom@SpeedInc

iTrader: (5)

This sounds very familiar??

Glad it worked out Mike.

crafty888

Just out of interest..... did you buy the pump on ebay?

trans2000am

iTrader: (49)

no he got it from speedinc. good to hear you got it working

ramairws6

iTrader: (33)

I also had mine wired per instructions and was very confused until I called tech and they told me to try and switch the wires.Bingo!Took right off with no issues afterwards. Traver

crafty888

I was thinking maybe the ebay ones have the terminals marked incorrectly...

I live in Hong Kong and do a lot of business in China so I know what they are capable of. They are however very good at copying things. A mate had a contract to supply 2000 hospital beds in the USA, he had a sample sent over for them to copy and asked them to do 10 samples. When he came to inspect the samples none of them worked. Turned out that the sample that was sent over was faulty and they had copied it exactly, including the faults. hahaha

Tom@SpeedInc

iTrader: (5)

No

Its a problem with the instructions

Full Throttle is changing this.

Fifedogg

iTrader: (15)

I had great success with that same pump. I put somewhere around 20k miles on it. I bought it with the racetronix kit and loved it. I think I bought mine from thunder racing. Did you happen to buy it from E-Bay or something?

Racetronix

iTrader: (2)

The FT product is not a Racetronix product.
Our pump assembly comes with a new connector installed and pre-tested.
Our instructions were correct from day one given two years of field tests before its release.

ramairws6

iTrader: (33)

This doesn't sound good coming from the horses mouth..........the Full Throttle unit is not from Racetronixs and yet Speed Inc. is selling them as a Racetronix unit!What gives?!I too purchased mine from Speed and had this issue with the wires.Who's product is it anyways? Traver

crafty888

There's a few possibilities here:

1. There's a batch of genuine ones in the market with the terminals around the wrong way

2. The instructions are printed wrong

3. These are not genuine ones.

I would have thought that the terminals have a + and a - stamped on them so Im having trouble understanding how the instructions could be wrong in saying hook + to + and - to -.....

If the "fix" was to hook it up the wrong way around then it really can only be #1 or #3 above..... and if it is #1 then I would have thought Walbro would have recalled or at least advised dealers.

Post the instructions and show us where it was wrong,.

mcmike

Just to clarify.The problem was with the Full Throttle Instructions.Speed Inc.DID NOT sell it as a racetronix unit or imply in any way shape or form that it was anything other than a Walbro 255 packaged from Full Throttle.