Ok, need some help troubleshooting this: You probably know my Park Avenue by now, 1984. It has the Olds 307ci in it. Today was disgustingly hot. About 39C with the humidity. After about, 30mins of driving, the engine starts stuttering, at.. hmmm 1/8th pedal, but I can push past it and it runs fine. It idles fine too. My thoughts first goto the carb, but really - why is it doing it? Cuz its hot!! so... how do I got about troubleshooting this problem, and fixing it. Is this a common problem for these engines? Is it possible a hose, sensor or something else is screwed up? (well obviously something is) Please help. Its gonna be a long hot summer, and I can't have this thing stuttering all over the place.
Don't Bother Sounds to me like you are a point A to point B kind of driver with no burnouts in between. My suggestion to you would be to crush that 84 Buolds, and buy an EFI something or other. Your car is vapor locking, this is where the fuel gets so hot that it starts to boil inside the carb. Thus, all of this studdering, not wanting to run nosense. Not good sir, and you won't have that problem with a fuel injected car. From, Kevin
Re: Don't Bother Well thankyou Kevin Vapor lock. The car is a driver, not a looker or a strip cooker. I have no intention of converting this car to fuel-injection, nor would I waste my time or money on another engine. I want the car to run properly, so I can get it into some lucky persons hands, with minimal problems Now, as for crushing it?? Yea, no... not gonna happen. Thanks for coming out though. :Brow: So, what's next? Where do I go from here, and what do I need to know so I dont get horribly raped when I take it in to be repaired/serviced?
I agree vapor lock. The solution is easy and does not require any trip to the shop. Just look at the fuel line, and insulate any exposed areas so that they do not absorb heat. Just about anything can be used to insulate it, it just needs to be able to hold up to the approx 200 degrees it may see under the hood.
Ok so, now - what should I be shielding the fuel line with? Materials needed for this project? Should I consider re-routing it somehow (if possible). Audio/Video Equipement, Paint, Body work - no problem Engine stoof... I'm at a loss. Thanks for the insight so far.
I used to work as an engineering technician, and some of the engineers were gear heads. One of them re-routed his fuel line to run alongside the A/C line from the A/C pump to the exchanger in the cowl. I believe that is the high-pressure side, right? He put the two aluminum lines close to each other, used electronic heat-sink goop, aluminum foil, and duct tape, and re-insulated the paired lines with foam tubing similar to the original. When it was hot out, he had the A/C running anyway, and the cold line cooled the fuel en route to the carb. Now, I just know your Battleship has A/C, right?
I have a 307 in an Olds Delta 88. A while back I had a problem with the vacuum hoses that went to the vapor cannister. When it gets hot, there are vapors that get sucked into the motor from it. You may want to check and see if that is a possible problem. Also, I had a bad EGR valve that was causing it to knock. If the hose to the valve is bad, you could be sucking air and causing a lean condition and misfire. It may be a good idea to check all the rubber hoses as they dry out from all the heat these motors create. Vapor lock usually (not always) stalls the car since you can't pump vapor. Sounds more like a vacuum/EGR problem to me. Just my 2 cents, Mark
Wow great imput guys.. thanks. The 'Battleship' does have A/C, unfortunately it has runout (correct term?) I do however have a lead on someone that can get it breathing ice again. Rubber is all pretty good, but I'll go through it again. Then again, with almost 20years under its belt, I guess anything can happen. Id prefer not to re-route any lines if possible. Now, are these problems consistant with only 35,000miles on these 307's?? Or are these symptons of a car being driven like a porsche. The car sat for quite a while, but was given a checkup along with about 500miles a year until I purchased it, and all my driving is highway (40-60mph) and cruise nights (0-5mph)
