p24-1953 Posted December 16, 2011 Report Posted December 16, 2011 I keep a log of everything that I do to the car, and I have noticed that the intown gas mileage has dropped from a constant 14 mph to 8 mph for the last two tanks. I have also noticed that the exhaust seems to smell rich after i turn it off. I did a quick check under the hood tonight a see nothing wrong. PVC is connected , choke appears to be functioning. The power level seems fine. No hard start or run on issues. No back fires. Nothing has been modified to the car other than a oil change in 6 months. What could case this condition. Where should I start checking? Quote
busycoupe Posted December 16, 2011 Report Posted December 16, 2011 I'm not sure, but possibly the needle valve in the carb is not sealing properly. It could be worn or perhaps a bit of dirt is in it, or possibly the float is not floating high enough. It would be fairly easy to check. Dave Quote
suntennis Posted December 16, 2011 Report Posted December 16, 2011 Perhaps a dirty or stuck carb float valve. Quote
greg g Posted December 16, 2011 Report Posted December 16, 2011 When did you last check the condition of your points ?? Has your timing slipped? Do they add oxiginator to your fuel there? Here in the northeast we get winter blend fuel which is good for about 2 to 3 mpg less that what passes for real gas these days. Quote
Niel Hoback Posted December 16, 2011 Report Posted December 16, 2011 My first guess would be that your power valve is stuck in the up position. Possibly no vaccuum or not enough to pull it down. Quote
bamfordsgarage Posted December 16, 2011 Report Posted December 16, 2011 Hoping for my own Sudden Rich Condition. Maybe the next draw... Quote
Don Coatney Posted December 17, 2011 Report Posted December 17, 2011 Nothing has been modified to the car other than a oil change in 6 months. After you made this statement I did a quick search of your recent postings. Did your car not burn up? Did you not do a complete re-wire on your car after this burn up? When you state that nothing has been modified I must question what modifications were done after the fire? Quote
p24-1953 Posted December 17, 2011 Author Report Posted December 17, 2011 Don I have more than one car. Quote
Don Coatney Posted December 17, 2011 Report Posted December 17, 2011 I keep a log of everything that I do to the car, and I have noticed that the intown gas mileage has dropped from a constant 14 mph to 8 mph for the last two tanks. I have also noticed that the exhaust seems to smell rich after i turn it off. I did a quick check under the hood tonight a see nothing wrong. PVC is connected , choke appears to be functioning. The power level seems fine. No hard start or run on issues. No back fires. Nothing has been modified to the car other than a oil change in 6 months. What could case this condition. Where should I start checking? Don I have more than one car. Really? Good luck with it. Hope it does not burn up too. Quote
RobertKB Posted December 17, 2011 Report Posted December 17, 2011 Don I have more than one car. I wondered, too. Is this car also a flathead? Quote
greg g Posted December 17, 2011 Report Posted December 17, 2011 I would think at this point, without further identification of the vehicle except for, the other one, further diagnostic sugestions speculative in nature. Quote
Eneto-55 Posted December 17, 2011 Report Posted December 17, 2011 Hoping for my own Sudden Rich Condition. Maybe the next draw... Me too. And here I thought your ship had come in, and you were looking for some poor saps who could use a little help.... Neto Quote
p24-1953 Posted December 17, 2011 Author Report Posted December 17, 2011 (edited) it appears that the vacuum line from the car to the distributor has a small pin hole leak in it. i have corrected that and we will see if the gas milage goes up. The car is a 62 impala with a 327. i know its off topic but the cause of the problems could possible be the same for both cars. And the support network for the impala is not as vast and knowledgable as the one i have here nor do the respond as quickly. Edited December 17, 2011 by p24-1953 Quote
p24-1953 Posted December 17, 2011 Author Report Posted December 17, 2011 (edited) Really? Good luck with it. Hope it does not burn up too. ouch that hurts... are we cranky today.... not enough fiber? Edited December 17, 2011 by p24-1953 Quote
Dodgeb4ya Posted December 17, 2011 Report Posted December 17, 2011 "Really? Good luck with it. Hope it does not burn up too." Nice statement! Stupid too. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.