ran bad after 30 min.

[58prostreet]

I have a 52 wayfarer. You may remember previous post where I kept losing fuel pressure. I tried new manual pump,two different elec. pumps,manual and elec. together, with and w/o regulators. Nothing fixed declining fuel pressure. Initially car would run for 15 or 18 min. and pressure would drop from 5 or 6 lbs to zero and quit. After a couple of attemps at fixing, when it started dropping I would get p/o'd and shut it off so I didn't have to reprime carbs. Then I saw a post on HAMB about a guy having similar problem. H fixed by repalcing liquid filled guage with dry. I bought a cheap Mr. Gasket dry guage and now the pressure holds at 3.5 all the time. Something I did along the way fixed the dropping pressure problem, but I don't know what.

Well, now pressure is fine but car starts running really rough after about 1/2 hour. Runs excellent until this point, then starts to miss and sputter. Somewhere, either here or on HAMB I read something about coil getting hot and causing rough run. I replaced coil, and just got back from and hour drive and ran perfect.

Thought I would pass these 2 pieces of info. along, as they were relatively cheap and probably not all that obvious.

As info., I have 230 c.i. with Langdon hei and dual carter/webers. All the rest is stock.

Hope this helps somebody.

Bob

[Niel Hoback]

It sounds like your gas tank is not vented. Check your cap.

[aero3113]

It sounds like your gas tank is not vented. Check your cap.

I was going to say the same

[P-12 Tommy]

It sounds like you had blockage in the line and you still haven't got it all out yet.

Tom

[Greenbomb]

Thanks for the info. Drive it a few more times and let us know how it does.

[58prostreet]

NO!...My problem is solved. Somwhere along the line it got fixed. I just don't know when or what fixed it. I am just passing along the info. for others to put in the memory bank about the fuel pressure. I know what fixed the rough run after 1/2 hour or so. It was the new coil....If it turns out I'm wrong, i will come back and let u know, butfor now these are two relatively inexpensive fixes when all elsef fails.

Bob

[JIPJOBXX]

If it starts to run ruft put some ice cubes around the new coil to cool it down and then if it run better than you will know its your coil.

[Merle Coggins]

I am having a hard time understanding how changing from a liquid filled gauge to a cheaper gauge would correct a problem with fuel pressure dropping off. A gauge can not affect pressure, it only measures it. I suspect you still have a problem in your fuel system. How many other lines did you mess with while you were changing out the gauge?

Merle

[58prostreet]

Merle...Changing the gauge did not solve the problem. The liquid filled gauge was giving me a false reading. Before changing the gauge, i had changed fuel pumps, both elec. and mech. I had changed filters, tanks, tank locations, etc. I did have a problem initially, and somwhere along the line I solved the problem. The faulty liquid gauge just did not let me know I had solved the problem. The gauge was showing decreasing fuel pressure, and I was shutting the car off when it started to show declining pressure so I wouild not have to prime the carbs to restart.. If I had let it run it would have shown Zero on gauge, but would not have cut off. I hope I am not confusing everyone. I am only saying that the dry gauge gave me a true pressure reading and the liquid filled gauge did not.

Thanks Bob

[58prostreet]

Took the Dodge out yesterday for about 40 mile ride. Did fine. There was a fair amount of traffic on part of the ride, so it got the temp. up to good operating temp

Bob

[P-12 Tommy]

Bob, I'll bet it's a relief that's it's running good now. Congrats.

Tom

[58prostreet]

Yeah, it was a relief. You ride along all pckered up waiting for the thing to start missing. The level of trust is on the rise!

Thanks Bob

[Joe Flanagan]

Boy, I know that feeling. I've experienced it with my 22-year-old daily driver. It takes a while for you to be convinced everything is OK and you can relax. The coil went on that vehicle, by the way, but instead of running badly, it just quit. I tested it according to the manual and it was bad. Just for kicks, I tested it again the next day and it was good. I believe it is a temperature thing, which is why an ice pack works.

[Johnny 5]

Bad coil? They act up only when they get hot.