Running better

[Ran440]

Well I have been working on an intermittent power loss/ engine miss for the last few weeks. What I was experiencing was a power loss when I got the truck up to speed and let off the gas a little. I would feel a loss of power then power would come right back.
Found the dist. cap in poor condition and appeared to have spider web cracks so I replaced the cap and rotor, plugs and plug wires. No change.
Next I replaced the fuel filter. The one that is near the fuel pump. No change.
So still thinking it is a fuel issue I put a whole can of Seafoam Fuel Treatment in.
Well as of right now she is running better.
Here is one thing I noticed. Lately, while running bad, when filling up the tank I noticed a big whoosh when I removed the fuel tank cap. Like the fuel tank was under pressure, not vacuum. I have added fuel twice since it has been running better and no whoosh when I remove the fuel tank cap.
Still not sure if it was the fuel cap malfunction or something like a fuel return line????
I do believe the Seafoam cleaned something out. Will run one more whole can per fill up to make sure things are cleaned out.
I just hope too much Seafoam doesn't hurt anything but my wallet.

[TRAX and HORNS]

Seafoam shouldnt hurt anything. Ive been using it for a couple of yrs. now and have either had no results or positive results. Nothing ever bad.. Sometimes a carb. is so gunked up you have no choice but to remove it, clean it, and rebuild it. Following the directions is always a good ideal, however I have disconnected the fuel line at the tank and sucked it directly into the carb. let it sit for 30 min. or hour a number of times with no ill effect.
I use it in everything, boat, chain saws, mini trucks, motorcycles ect.
As for the pressure I would fine the return line to fuel tank (disconnecting at both ends if it has one) and blow through it.

[Jim Nelson]

Sea foam seems to be great but I took the fuel line off at the tank and stuck it into a can of Seafoam and it wiped out the fuel pump.It was a universal pump from Autozone and I have no clue as to what happened but it sucked about 1/4 can then just stopped pumping,it still ran but wouldn't pump.I really like the product and this is the only negative experience I've had.

[woodhe1]

Sea foam seems to be great but I took the fuel line off at the tank and stuck it into a can of Seafoam and it wiped out the fuel pump.It was a universal pump from Autozone and I have no clue as to what happened but it sucked about 1/4 can then just stopped pumping,it still ran but wouldn't pump.I really like the product and this is the only negative experience I've had.

you have to change the fuel pump to an OEM. The fuel pumps run about 3 lbs of pressure but yours is kicking out about 7 and the carb. cannot get the excess fuel back to the tank fast enough ... just loading it up.

my thoughts,

dan