Howdy everybody. Been a long time. I was formerly known as Rproject, but for some reason I can't get that username to work anymore. So I'm back, with username cgebs69.
I have an 87 Laredo with a fresh 4.2 in it. My previous 4.2 gave up the ghost last year and for a multitude of reasons, a new motor wasn't able to be put in to my rig until now. Here's what was done:
- new HEI distributor
- donor intake/exhaust manifold from an 86 4.2
- donor pulleys and brackets from and 86 4.2 in order to delete the a/c compressor
- wiring clean up from previous nutter bypass and ICM/ECM delete with the new distributor
- migration of MC2150 from my motor to the new 4.2
- oil pan from donor 86 4.2 (mine had a hole in it from the rod that it threw last year. LOL)
- New belts, hoses, plugs, wires (8mm)
- timing to 9 degrees
So here's the deal. My mechanic got it running. Beautifully. He drove it 15 miles to my place. I drove him back to his. Everything was good to go. Ran a few errands including a bath for the Jeep, fresh gas and a few other things. Still, all good. Went out for a gentle run in the country to stretch its legs after sitting for a year. After about 45 minutes and 40 miles, started to get a hesitation when turning. Then a hesitation when giving it gas. Had to double tap the gas pedal to keep it from bogging down. Died on me a couple times. One time I couldn't get it to restart. My buddy dragged it back to my mechanic's with me. He jumped on the gas pedal a couple times and it started and has started without touching the gas pedal every time since, BUT, it's still hesitating and wanting to die on turns. Only right hand turns, though.
My mechanic has opened up the carb and the float is working. The bowl is about 1/2 filled with gas. When the throttle is operated, it's squirting gas just fine. Pretty stumped at this point as to what is causing the starvation. Fuel? Air? Spark is definitely good. Fuel pressure is at 10psi. Fuel filter is clean as a whistle.
Thoughts from my carb brethren? Thanks.
Pic is of my rig. One of my favorites. It was taken by my, then, 11 year old daughter at The Badlands in Attica, Indiana.