How to Diagnose Tired Injection Pump

[mfgguru]

I am wondering if there are procedures and measurements(via scanner) to determine whether or not my IP is in good shape or on it's way out. I would like to have some solid indicators prior to changing it.:thumbsup:

Thanks,
Mike

 

[Dieseldad97]

Hey Mike.

What the heck's going on? Pump issues...I hope not.

 

[mfgguru]

Just wanting to check it out. It's the original pump, and I have had lousy fuel mileage and seemingly intermittent power. No real issues, just preventative. I want to pull the camper a fair bit this summer, so I want all hands on deck so to speak.

Good to hear from you!

 

[BigBlueChevy]

To my knowledge the only way to test a tired pump is when the truck refuses to start after reaching operating temp and you pour warm water over it.

But considering the power of EFI im sure there is a way to test it.

 

[chrisk1500]

Fuel rate at idle....

Try the 2000 RPM test...

 

[mfgguru]

Fuel rate at idle....

Try the 2000 RPM test...

Could you be a bit more specific.
2000rpm test? Hold it at 2000 rpm and see if it sputters?

What is the fuel rate supposed to be at idle?

 

[NVW]

Mike, fuel rate at idle should be 7-10 mm3 give or take a bit. Try to hold the rpm's at 2000, if it will hold steady the IP is probably good.

Leo

 

[Brooklyn Tow]

Climb slowly to the 2000 RPM mark, and desend slowly.......It should be smooth with NO hiccups, and it shouldn't run up or die down, just smooth......This was explained to me as per Bill Heath.

 

[chrisk1500]

Bill has it in his Heath Blogs....