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Walbro 450 Lph E85 Fuel Pump Issue/ Power Supply

camoo

By camoo,
in Engines & Forced Induction

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camoo Collaborator

camoo

Posted
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Posted

so I pulled the plugs and they were all good. figured I would do a comp test while they were out.

cylinders 1-5 were around 110psi.

cylinder 6 was around 45...

I think I have found the problem, just a coincidence out occurred the day I put the pump in :(

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

so I pulled the plugs and they were all good. figured I would do a comp test while they were out.

cylinders 1-5 were around 110psi.

cylinder 6 was around 45...

I think I have found the problem, just a coincidence out occurred the day I put the pump in :(

oh fuark, now that sucks big time!

.. hmmm that could have been through a lean out also, you did say you were only getting some whacked voltage to your fuel pump.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Did a pressure test and leak down test. Looks like it's the rings. Well I was about to switch to e85, looks like ill build the motor first I guess

R34 motor too.. they're supposed to be build as tough as volvos

  • 4 weeks later...
camoo Collaborator

camoo

Posted
  • Author
Posted

Just an update on what eventuated.

Ended up being the lack of power supply to the pump caused the spark plugs to cook themselves.

Visually they were fine, but after chucking in a new set to double check, problem solved.

The low comp is an issue to sort out in the near future, but in the mean time made 330 RWKW on E85.

Will strip the motor and rebuild once the lack of compression becomes more of a problem.

Cheers for all the help everyone.

Blackkers Experienced

Blackkers

Posted
Posted

If it was just the rings, you could potentially rebuild it quite cheaply. Just a hone and new rings if the pistons haven't been smashed. I'd be checking the ring lands then just throw it back together

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