New problem - Engine revs fine but doesn't drive well at all.

[Young Ed]

In the name of science hacksaw open the old filter and see how clogged it is.

[Niel Hoback]

Inquiring minds want to know.

[Jim Saraceno]

A clogged fuel filter should have showed up in the volume/pressure test.

[White Spyder]

Check the for old rubber fuel line that may be restricting flow under load. How is the compression?

I was on the right track!!!!!

[Powerhouse]

sorry guys...been busy with other stuff:eek: hahaha

nothing fun though.

The filter was a plastic see thru type. It looked very clean to me...but there was a bit of sediment on the boittom. maybe it was clogged with microscopic junk?

[Greenbomb]

Did you take it to work the next day? If so, How did it do?

[greg g]

Gentlemen take a hint from this and a couple other recent posts. When drivability probles rear their ugly heads, a trouble shooting flow chart is your best friend

Remember the 4 stroke cycle, simplified it is suck, squeeze, Bang, Blow. If one of these thing is out of whack it doesn't work. The first and simplest test is compression, the next is fuel and flow, then check electrical. If you have the fiirst two, then it leaves the electrical as the only part of the equation (assuming you haven't recently welded your exhaust shut) that is left.

90% of the reports on this forum of driving problems have been fuel supply related.

Assuming of course the 65% of all statistices are made up on the spot.

[Powerhouse]

Thanks...yes, a trouble shooting flow chart is the way to go. I wish I could remember that.

I tested igniton parts, took apart the carbs and cleaned them, then I took the electric pump out of the system and put the old stocker back in. When i took the the elec pump out I noticed the fram see thru plastic fuel filter had some sediment in it so I replaced it. When i disconnected the filter on the "out" side the fuel didn't come pouring out as it should have. when I disconnected the "in" side...fuel cam out of the line from the tank as expected. I think the filter was clogged somehow...looked clean to me.

I should have stuck to the old game plan when diagnosing car trouble....START WITH THE CHEAPEST PARTS FIRST.

Edited June 6, 2011 by Powerhouse

[Powerhouse]

Did you take it to work the next day? If so, How did it do?

It drove rather nicely...I hope it continues this trend. hahaha

[yourpc48]

I had to open up my tank when I got my car to weld in some new metal where the car sat and rotted out the tank. I dont know how many of you have had one of these tanks open but they have a strange kind of filter in the tank that you cant get to. I had to take the cap off the tank and blow back through the line to clear it once after reassembly. Have not had a problem since other than a bunch of gunk in the carb before I knew there was no filter in the fuel pump. I put a filter in the line and have been good since then. Just wasnt sure if anyone has thought about that as a fuel issue in the future.

[Jim Saraceno]

I think the filter was clogged somehow...looked clean to me.

I should have stuck to the old game plan when diagnosing car trouble....START WITH THE CHEAPEST PARTS FIRST.

Actually, it's better to diagnose before replacing. Most components can be tested for function. In the case of the fuel filter being clogged, I would think it would have shown up with volume and pressure tests. Did you ever do those?

[Don Coatney]

. I think the filter was clogged somehow...looked clean to me.

How could you tell by looking? Clean on the outside does not indicate it is not plugged and dirty on the outside also does not indicate that it is plugged. A flow test is the only way to tell.

Several years ago on my daily driver I replaced my fuel filter late one fall. Next spring having driven in winter slush I went to a quick oil change place. The young under car guy invited me to the pit to have me look at the filter. He told me it needed to be replaced as it looked dirty and he had been through training and was trained to replace dirty filters. I ask him how he could tell it was in need of replacement and he told me to look at it. I told him that the filter was only 3 months old and it would be fine. I am still running that same filter today.