[Robert]

Hello all
 New to forum, I would like to get feed back on me 35. Express, I have a problem with port engine rpm very erratic 
Sometimes stalling but always seems to restart.
Drained all gas, new filters all of them, new fuel pump, fresh tune up, all wiring seems to be in order, swapped parts from one engine to the other and back, coil good, disconnected tach not the issue.
I don’t know where to go from here

[reeltimebrad]

You may want to post this in the gas engine repair forum and more people will respond also will need more engine info 454 carb, 8.1 f.i. etc. I would say start with a compression check on all cylinders before wasting anymore time and money so that you have a good baseline of the motor condition.

[RCKLAW]

I had a similar issue with my 1995 31' Open with fuel injected 454s. After eliminating just about everything else under the sun, the issue proved to be a defective anti-siphon valve in the fuel tank.

[Robert]

Compression was and should be in good was done yr. and half ago and only put 15 hours

Thanks for the advise and ideas