HELP! All of a sudden 360 runs like crap (long winded)
#1646247
07/14/14 12:58 AM
07/14/14 12:58 AM
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Joined: Mar 2013
Posts: 30
So.IL.
shaggy1
OP
member
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OP
member
Joined: Mar 2013
Posts: 30
So.IL.
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Not sure on internals, since I bought the motor 10 yrs. ago, but it is by no means radical. Anyway, motor is in 70 dart with points dist. 727 and 3:91 suregrip. Went to Street machines and done a few burnouts in the campground, as it will light the tires instantly. All was fine until it wouldn't even turn a tire over. I had literally just lit the tires, went around a corner and tried to do another, and it fell on its face. Twice. Ran fine rest of the weekend until the drive home. Got on the Istate after about 20 miles of 2 lane or so, got up to 55 or 60 for a mile or two and it starts popping, backfiring and acting like its out of fuel. Pull off to the side and it finally clears up and will rev. Pull back out and it does the same thing 4 more times. Ended up swapping it out in the trailer with a buddys car. get it home, and wont do a burnout. tried 4 or 5 times. 5 minutes later was driving it home, stopped, and it instantly lit the tires like nothing was wrong. Week later, thinking I had bad gas, drained tank put in 93 octane, and now, it wont idle. Always idled about 1000 rpm in park, 5 to 700 in gear. Now its 7 to 800 in park and 3 to 400 in gear. Hadn't touched timing or idle screw, Bump the timing up and idles better in park but still the same in gear. Pulled the plugs, they looked good. Put in a new set just because, and voila, it idled fine. So down the road for a run test, and it ran better than it ever had. All of a sudden when I pull up to a stop sign, it wont idle again. Is this all related or is this multiple problems? Pulling my hair out, somebody give me some help please.
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Re: HELP! All of a sudden 360 runs like crap (long winded)
[Re: shaggy1]
#1646249
07/14/14 01:04 AM
07/14/14 01:04 AM
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Joined: Nov 2005
Posts: 15,118
85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,118
85086
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Seems to be running out of fuel or there is crap in the needle and seat.
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: HELP! All of a sudden 360 runs like crap (long winded)
[Re: shaggy1]
#1646252
07/14/14 01:13 AM
07/14/14 01:13 AM
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Joined: Mar 2013
Posts: 30
So.IL.
shaggy1
OP
member
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OP
member
Joined: Mar 2013
Posts: 30
So.IL.
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Was going to change points and condenser in the morning, cap looks like new.
Last edited by shaggy1; 07/14/14 01:15 AM.
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Re: HELP! All of a sudden 360 runs like crap (long winded)
[Re: shaggy1]
#1646256
07/14/14 01:54 AM
07/14/14 01:54 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I just had a coil (black FBO) act just like that (part time)
live every 24 hour block of time like it's your last day on earth
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Re: HELP! All of a sudden 360 runs like crap (long winded)
[Re: shaggy1]
#1646258
07/14/14 02:24 AM
07/14/14 02:24 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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just me I'd change the condensor not the points or coil first. It'd be easy/cheap to do & you wouldn't have to mess with readjusting the points. But you do have an extra coil on hand to sub in & (free/The little bit of time expenditure needed) is as good as it gets. Holler how it turns out
live every 24 hour block of time like it's your last day on earth
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Re: HELP! All of a sudden 360 runs like crap (long winded)
[Re: shaggy1]
#1646261
07/14/14 12:40 PM
07/14/14 12:40 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Not sure on internals, since I bought the motor 10 yrs. ago, but it is by no means radical. Anyway, motor is in 70 dart with points dist. 727 and 3:91 suregrip. Went to Street machines and done a few burnouts in the campground, as it will light the tires instantly. All was fine until it wouldn't even turn a tire over. I had literally just lit the tires, went around a corner and tried to do another, and it fell on its face. Twice. Ran fine rest of the weekend until the drive home. Got on the Istate after about 20 miles of 2 lane or so, got up to 55 or 60 for a mile or two and it starts popping, backfiring and acting like its out of fuel. Pull off to the side and it finally clears up and will rev. Pull back out and it does the same thing 4 more times. Ended up swapping it out in the trailer with a buddys car. get it home, and wont do a burnout. tried 4 or 5 times. 5 minutes later was driving it home, stopped, and it instantly lit the tires like nothing was wrong. Week later, thinking I had bad gas, drained tank put in 93 octane, and now, it wont idle. Always idled about 1000 rpm in park, 5 to 700 in gear. Now its 7 to 800 in park and 3 to 400 in gear. Hadn't touched timing or idle screw, Bump the timing up and idles better in park but still the same in gear. Pulled the plugs, they looked good. Put in a new set just because, and voila, it idled fine. So down the road for a run test, and it ran better than it ever had. All of a sudden when I pull up to a stop sign, it wont idle again. Is this all related or is this multiple problems? Pulling my hair out, somebody give me some help please.
Points and condenser for sure IMO. I'm old enough to have worked on gasoline powered tanker trucks that had points. About every 2-4 weeks I had to adjust them. I got really good at it and you could adjust for low rpm power and that is what a gas powered truck needed.
You can change how your car runs by the points gap, get familer with them because they need adjustments often to maintain performance. Not unusual to knock them out of wack with a burnout.
Ahhh the days of actually tuning...I remember.
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