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I must be jinxed!! #1917938 09/23/15 10:50 AM 09/23/15 10:50 AM
Joined: Jan 2003 Posts: 540 Northwest PA B BassMan OP mopar
BassMan OP mopar B Joined: Jan 2003 Posts: 540 Northwest PA	I have another thread dealing with a problem whereby my car(70 Hemi Challenger) stalls and misses after driving a short ways. Well, today another of my cars, a 1970 T/A, started doing almost the same thing except it doesn't have a miss. It is a stock T/A that was rebuilt about 3 years ago and has run perfectly(except for a vapor lock issue) up until now. Now all of a sudden today it stalls every time I slow down. It starts right back up again and doesn't seem to have a miss. Any suggestions on where to start looking???

Re: I must be jinxed!! [Re: BassMan] #1917940 09/23/15 10:55 AM 09/23/15 10:55 AM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	It sounds like your cars sit's for years? If so then you need fresh gas in both, imo to start with.

Re: I must be jinxed!! [Re: BassMan] #1918024 09/23/15 01:11 PM 09/23/15 01:11 PM
Joined: Jan 2003 Posts: 540 Northwest PA B BassMan OP mopar
BassMan OP mopar B Joined: Jan 2003 Posts: 540 Northwest PA	They do sit for most of the year but they both have fresh gas in them, at least relatively fresh. The 70 Hemi Challenger just filled up about 3 weeks ago and the T/A about 2 days ago.

Re: I must be jinxed!! [Re: BassMan] #1918026 09/23/15 01:15 PM 09/23/15 01:15 PM
Joined: Jan 2003 Posts: 13,363 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,363 Marion, South Carolina [><]	How old was the gas in them prior to you just filling them up? CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax

Re: I must be jinxed!! [Re: BassMan] #1918039 09/23/15 01:30 PM 09/23/15 01:30 PM
Joined: Nov 2004 Posts: 2,495 Oregon City, OR Baxter61 top fuel
Baxter61 top fuel Joined: Nov 2004 Posts: 2,495 Oregon City, OR	define "relatively fresh"...the gas in my generator went bad in 3 1/2 weeks and the gas in my sebring went bad in a month. like didnt want to start and run bad.

Re: I must be jinxed!! [Re: BassMan] #1918047 09/23/15 01:35 PM 09/23/15 01:35 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Originally Posted By BassMan They do sit for most of the year but they both have fresh gas in them, at least relatively fresh. The 70 Hemi Challenger just filled up about 3 weeks ago and the T/A about 2 days ago. These are common problems w/vehicles that sit and even after 30-40 days I`ve seen varnish and plugged up carbs beyond anything but a rebuild..............just sent out two that were a mess. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: I must be jinxed!! [Re: Thumperdart] #1918117 09/23/15 03:26 PM 09/23/15 03:26 PM
Joined: Jan 2003 Posts: 13,363 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,363 Marion, South Carolina [><]	Originally Posted By Thumperdart Originally Posted By BassMan They do sit for most of the year but they both have fresh gas in them, at least relatively fresh. The 70 Hemi Challenger just filled up about 3 weeks ago and the T/A about 2 days ago. These are common problems w/vehicles that sit and even after 30-40 days I`ve seen varnish and plugged up carbs beyond anything but a rebuild..............just sent out two that were a mess. Pump gas is crap and goes bad real fast. If they're gonna sit, get some sta-bil or mix in some race gas. CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax

Re: I must be jinxed!! [Re: an8sec70cuda] #1918133 09/23/15 03:47 PM 09/23/15 03:47 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Originally Posted By an8sec70cuda Originally Posted By Thumperdart Originally Posted By BassMan They do sit for most of the year but they both have fresh gas in them, at least relatively fresh. The 70 Hemi Challenger just filled up about 3 weeks ago and the T/A about 2 days ago. These are common problems w/vehicles that sit and even after 30-40 days I`ve seen varnish and plugged up carbs beyond anything but a rebuild..............just sent out two that were a mess. Pump gas is crap and goes bad real fast. If they're gonna sit, get some sta-bil or mix in some race gas. Don't use pump gas in a classic car that sits. Use race gas or straight gas with no ethanol like they sell at marinas.

Re: I must be jinxed!! [Re: Challenger 1] #1918171 09/23/15 04:36 PM 09/23/15 04:36 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Gas going bad with varnish and spiders building nest mess up carbs all the time... even with a air filter on it they some how manage to get in the carb

Re: I must be jinxed!! [Re: MR_P_BODY] #1918217 09/23/15 05:51 PM 09/23/15 05:51 PM
Joined: Jan 2003 Posts: 540 Northwest PA B BassMan OP mopar
BassMan OP mopar B Joined: Jan 2003 Posts: 540 Northwest PA	I put StaBil in the gas when they sit for over the winter. I don't think old gas would start fine, run fine and then stall on deceleration.

Re: I must be jinxed!! [Re: BassMan] #1918232 09/23/15 06:04 PM 09/23/15 06:04 PM
Joined: Jan 2003 Posts: 5,762 Hot Rod Ridge FastmOp master
FastmOp master Joined: Jan 2003 Posts: 5,762 Hot Rod Ridge	Your right, it wont. Spray all the little carb holes with carb cleaner and compressed air.

Re: I must be jinxed!! [Re: BassMan] #1918236 09/23/15 06:06 PM 09/23/15 06:06 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Originally Posted By BassMan I put StaBil in the gas when they sit for over the winter. I don't think old gas would start fine, run fine and then stall on deceleration. Gas will go flat... it looses the RVP out of it(the high ends of the fuel) even with Stabil... under load the the fuel wont burn properly... the RVP(Reed Vapor Pressure) wont make the high ends which makes the vapor which you actually burn... remember you dont burn the liquid... the vapor makes the BOOM EDIT Under load you need a good fuel and a good ignition Last edited by MR_P_BODY; 09/23/15 06:10 PM.

Re: I must be jinxed!! [Re: BassMan] #1918290 09/23/15 07:16 PM 09/23/15 07:16 PM
Joined: Oct 2003 Posts: 11,684 W. Kentucky justinp61 I Live Here
justinp61 I Live Here Joined: Oct 2003 Posts: 11,684 W. Kentucky	I always put sta-bil in my car and also use seafoam from time to time.

Re: I must be jinxed!! [Re: MR_P_BODY] #1918304 09/23/15 07:43 PM 09/23/15 07:43 PM
Joined: Jan 2003 Posts: 540 Northwest PA B BassMan OP mopar
BassMan OP mopar B Joined: Jan 2003 Posts: 540 Northwest PA	Originally Posted By MR_P_BODY Originally Posted By BassMan I put StaBil in the gas when they sit for over the winter. I don't think old gas would start fine, run fine and then stall on deceleration. Gas will go flat... it looses the RVP out of it(the high ends of the fuel) even with Stabil... under load the the fuel wont burn properly... the RVP(Reed Vapor Pressure) wont make the high ends which makes the vapor which you actually burn... remember you dont burn the liquid... the vapor makes the BOOM EDIT Under load you need a good fuel and a good ignition I really do appreciate the input but the car isn't stalling under load, it's stalling when I slow down. The only time I have ever had a problem with an engine that I really feel was due to old gas was with my outboard motor. My boat had some 3-4 year old gas in the right side fuel tank and it would start and idle fine but did not have enough power to get up on plane. When I switched to the left tank which had fresh gas the problem went away. Before I switched tanks, I checked the plugs and they all looked good except 1 was slightly fouled. Afterwards, I was talking to a marine mechanic and he told me exactly which plug was fouled and he said that was a sure sign of old gas in that motor, it is a 200 hp Mercury EFI.

Re: I must be jinxed!! [Re: BassMan] #1918307 09/23/15 07:52 PM 09/23/15 07:52 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Originally Posted By BassMan Originally Posted By MR_P_BODY Originally Posted By BassMan I put StaBil in the gas when they sit for over the winter. I don't think old gas would start fine, run fine and then stall on deceleration. Gas will go flat... it looses the RVP out of it(the high ends of the fuel) even with Stabil... under load the the fuel wont burn properly... the RVP(Reed Vapor Pressure) wont make the high ends which makes the vapor which you actually burn... remember you dont burn the liquid... the vapor makes the BOOM EDIT Under load you need a good fuel and a good ignition I really do appreciate the input but the car isn't stalling under load, it's stalling when I slow down. The only time I have ever had a problem with an engine that I really feel was due to old gas was with my outboard motor. My boat had some 3-4 year old gas in the right side fuel tank and it would start and idle fine but did not have enough power to get up on plane. When I switched to the left tank which had fresh gas the problem went away. Before I switched tanks, I checked the plugs and they all looked good except 1 was slightly fouled. Afterwards, I was talking to a marine mechanic and he told me exactly which plug was fouled and he said that was a sure sign of old gas in that motor, it is a 200 hp Mercury EFI. So have you checked the ignition... or a plugged air bleed

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