Fuel rail pressure surge

[podulkad]

The trucks frp surges bad, 8-20k psi. tried a ton of things. No luck, makes the truck Shakes bad, undrivable.
Does it on acceleration and at cruising speeds.
Can't figure it out, any help would be great.
Running dual fuelers with 100% injectors. 59/76 turbos innovative and gearhead tunes.

 

[sideactiondiesel]

What dual fuelers ?

Does it still do it with a stock calibration??

How many miles are on both pumps ?

What parts have you changed already ?

 

[podulkad]

Diesel dr
Changed the frp sensor
Got new tunes
Added heat wrap to everything.
Monitor tempts
Lift pumps at 10 psi


No ported rails
No fuel bowl delete
But i know people that have those and have the issue too

 

[podulkad]

150k on both pumps
Stock calibration??

 

[sideactiondiesel]

Yeah like stock tune . Have you loaded the stock tune into the truck and see if it does the same thing ??

 

[podulkad]

I'm gonna try that tomorrow. As well as play with my lift pump pressure.
I just bought tunes telling the tuning company my issue, but no luck

 

[sideactiondiesel]

Also.. Did you ohm the harness out before you installed the splice harness ?. And 150 on both pumps isn't to bad.... But vcv on one pump or vs versa could be giving you problems..

 

[podulkad]

Did not ohm check the harness

 

[6.4 Stroker]

I had a similar issue. Gearhead had to loosen smoke control a bit and that cured it

 

[podulkad]

I'll have to tell gear head that