goldenrule
New member
Hi Michael,
I have a question about your fuel pressure isolator. I've been running one of your mechanical fuel pressure gauges on my 01 Dodge Cummins for almost a year with no problems other than my own mistake of barely over tightening the nut at the connection to the fuel pressure tap right before the VP44. This resulted in a tiny leak of a few drops of diesel which I have been living with.
The gauge itself worked great until a recent trip to California when I tried adding XDP's fuel additive for the first time (I have always used Stanadyne lubricity additive in the past). After 2 tanks of fuel with that additive (about 1000 miles) I lost fuel pressure. When I looked under the hood the isolator (bolted to the firewall)was wet with diesel.
I have read on other forums about people having isolator failures due to fuel additives. Have you ever heard of this problem with XDP's product? Some folks suggest eliminating the isolator entirely and replacing with a needle valve, but I have also heard that the FP gauges are not designed to have diesel in them and doing so would void the warranty.
What do you suggest? Any chance you can help me out with a replacement isolator and braided line with fittings? I'm willing to pay, but didn't know if ISSPRO covered this sort of thing.
Thanks in advance for your input.
I have a question about your fuel pressure isolator. I've been running one of your mechanical fuel pressure gauges on my 01 Dodge Cummins for almost a year with no problems other than my own mistake of barely over tightening the nut at the connection to the fuel pressure tap right before the VP44. This resulted in a tiny leak of a few drops of diesel which I have been living with.
The gauge itself worked great until a recent trip to California when I tried adding XDP's fuel additive for the first time (I have always used Stanadyne lubricity additive in the past). After 2 tanks of fuel with that additive (about 1000 miles) I lost fuel pressure. When I looked under the hood the isolator (bolted to the firewall)was wet with diesel.
I have read on other forums about people having isolator failures due to fuel additives. Have you ever heard of this problem with XDP's product? Some folks suggest eliminating the isolator entirely and replacing with a needle valve, but I have also heard that the FP gauges are not designed to have diesel in them and doing so would void the warranty.
What do you suggest? Any chance you can help me out with a replacement isolator and braided line with fittings? I'm willing to pay, but didn't know if ISSPRO covered this sort of thing.
Thanks in advance for your input.