Festy no workee

[TominMO]

It sounds to me like you may have picked up a little water in your fuel. This can be do all kinds crazy things. I fueled up a couple weeks ago on our way to the dyno and the tanker was refilling the gas station. I didn't think about at the time until altered started acting up while accelerating and idling rough. Just a thought.

It's a consideration, but I doubt it in this case because I'm down to about three gallons. It woulda shown up soon after I last filled up, in my experience. Last time I came to Madness I got bad gas from two small stations in eastern Tennessee, once going east and once west. The second time I had a bottle of gas dryer with me, and that cleared it up in about 10 miles or so.

Plus the symptoms aren't the same. When it shuts off, it's like a light switch, which was why initially I was thinking ignition and checking the coil wire, etc.

[Motoxpress]

It sounds to me like you may have picked up a little water in your fuel. This can be do all kinds crazy things. I fueled up a couple weeks ago on our way to the dyno and the tanker was refilling the gas station. I didn't think about at the time until altered started acting up while accelerating and idling rough. Just a thought.

[TominMO]

No cat.

Couldn't wait. Went out today and put the fuel pressure gauge back on. Started it up and idled it until it got up to operating temp. Normally it sat at 36-37 PSI as it warmed up, but sometimes when it dropped from 1500 to 900 RPM the pressure actually rose to 40 PSI. Kept idling it, eventually it stayed at ~36.5. Drove it a couple of blocks, no problem. Maybe a temporary blockage in the filter? What are the symptoms when the fuel pump sock is getting clogged? Same as for a filter?

[Christ]

Plugged cat?

Easiest way to test it is to pull the O2 sensor. If it stays running, it's probably plugged.

[TominMO]

Tom, you have to leave the gauge on untill (and durring) the engine acts up. if pressure doesnt change, suspect the ignition system, otherwise, look for a blockage or pressure drop issue in the fuel system (if the gauge warrents that suspision).

OK, I'll check it again tmw....

[FestYboy]

Tom, you have to leave the gauge on untill (and durring) the engine acts up. if pressure doesnt change, suspect the ignition system, otherwise, look for a blockage or pressure drop issue in the fuel system (if the gauge warrents that suspision).

[TominMO]

Tom, I have the disty from my B6. I didnt use it since mine is carbed. If you need it, let me know!

Thanks Dan, but you have a gen1 B6 head, right? I think the distys are different betwen gen1 and gen2, which is what I have.

[drddan]

Tom, I have the disty from my B6. I didnt use it since mine is carbed. If you need it, let me know!

[TominMO]

While I'm at it, might as well get one for the Aspire. It gets pretty far from home at times.

Edit: Bought from Rock Auto two Wix fuel filters for the Festy, and two for the Aspire. This way I can keep one in each trunk, in my parts/tools boxes. Arriving Friday.

Question: as an emergency measure, could I hook the two filter hoses together with a metal line and not use a filter at all, if it was clogged?

Just had another thought: if the filter does not cure it, maybe it's the sock in the tank.

[Aaronbrook37]

Yep a fuel filter is definitely good bang for your diagnostic buck!

[TominMO]

OK, went out and put the fuel pressure gauge on. Idled consistently at 36 PSI for a few minutes. Took gauge off. Later turned motor on, idled @1500 RPM OK, then when it warmed up and dropped to ~1000 RPM, started sputtering. Didn't die. Gonna go buy a fuel filter anyway; the sputtering convinced me. No idea how old this filter is.

[TominMO]

Tom, check your fuel pressure and filter.... monitor pressure durring start up and while it dies, this will tell you where to focus your efforts

Will do, thanks.

[FestYboy]

Tom, check your fuel pressure and filter.... monitor pressure durring start up and while it dies, this will tell you where to focus your efforts

[TominMO]

I'm coming around to thinking it's a sensor of some sort. MAF, TPS, CAS? I have to look at my parts box, might have a spare B6 disty and a Festy coil.

[Pu241]

This not good!
If I could find anything here, I'd bring you another distributor.