Engine/Transmission (1998.5 - 2002) Isspro FP gauge pulsing

[DLBurns]

I have the 18" line coming off a -6AN coupling tapped with a 1/8" outlet which is aprox. 10" or so from the inlet to the the injection pump. This line runs up to the firewall where it connects to the isolator. I just started getting the pulse noise in my Isspro FP gauge and it's driving me crazy.

Would a needle valve in between the 18" hose and isolator eliminate the noise?

Anyone else experiencing this problem?

TIA

Dave

 

[Shovelhead]

I used a needle valve installed on the fuel filter housing on my '99.

No Buzz.



Just close the valve all the way, start the truck and barely crack it open, just until you get a good reading on the gauge.

Then shut the engine off, and be sure the pressure bleeds off quickly.

It might take two or three adjustments to get it perfect.



Ed

 

[DLBurns]

I would have thought that the pulsing noise would have been there from the get go... had almost 900 miles before the noise started

I may end up going with the needle valve, probably couldn't hurt anything.

Next question... where can I find a good quality needle valve? I don't want one of the cheapo brands that are out there. If memory serves, I thought I saw one posted here that was stainless steel and had a round wheel instead of the "t" type handle. Anyone else remember this???

TIA

Dave

 

[DLBurns]

TTT

TTT