2-Stroke

Im running DiPricol gauges. Fuel Pressure 0-30 and Boost 0-60.

Im getting an annoying buzzing / chatter from the FP gauge. Its intermittent and depending on rpm, it will change frequency. Im thinking it may be the isolator going bad or either low in antifreeze. Anyone with the same issue? I have the cheapo zinc isolator and its like 3 years old... should I upgrade to a better isolator?

With the Boost... the boost hangs up at zero. when im driving it stays at zero until I physically hit the pod and then it unsticks and reads normaly until I let the needle get down to zero again. Any thoughts?

05CTDN8

Your fuel pressure is a result of pulsing from the injection pump. Place a snubber (tiny shut off valve) in line with your tubing and only open enough that the pressure is read on the guage.

Where are you pulling your reading from? Are you using an isolator?

Not sure on the boost issue. Sounds like you need to get the boost gauge replaced.

Fisherguy

Autometer makes a snubber, my FP gauge was pulsating even with the needle valve.

2-Stroke

I pulling a reading from the injection pump input side though a braided line which feeds into my Isolator then to the gauge. I have the isolator filled with antifreeze... maybe its time to top it off again?

Ill check out the snubber... thanks!

Fisherguy

Oh, sorry, didn't know you have an isolator (I don't) but you could still try it if you can't figure anything else.