TM7 Stock fuel pump issues

[Radski30]

I am having an issue with the stock fuel pump. I unhooked the power from the secondary Walbro Fuel pump, and the sled would start. However, fuel pressure would spike to 38-40, which is normal, but after about 5 sec, fuel pressure drops to 30 PSI.

My question is...WHY? Could it be a bad Fuel pump? Could it be an electrical issue?

The higher in elevation I go, the less fuel pressure. I can't imagine it being a electrical issue, because the electrical system should be at a constant, not up and down.

What could it be? Bad stock fuel pump?

 

[hatchers]

yup, this is what my last fuel pump did....threw me for a loop for 4 damn rides, replaced, now HAPPY

 

[Radski30]

yup, this is what my last fuel pump did....threw me for a loop for 4 damn rides, replaced, now HAPPY

Thanks!!!

 

[product tester]

you could have bad fuel pump and elec issues there is a check for that also , If you need a stock pump I have lots you can have one.

 

[jgw50]

And that is why Stanger is awesome.