very sad 440-6
#254062
03/15/09 09:18 AM
03/15/09 09:18 AM
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Anonymous
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I fired up my 70 Cuda yesterday for the first time since Oct. When I first started I had a totally dead battery and used a jump to start it. The car ran terrible and after 20 minutes shut off and had to wait half an hour to restart it and kept the same cycle up all day. Would a dead battery cause the car to run and not run like that?
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Re: very sad 440-6
#254063
03/15/09 09:28 AM
03/15/09 09:28 AM
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Joined: Mar 2007
Posts: 3,291 West Coast, USA
jbc426
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It hasn't been running since October? I had the impression you were using the advice from all the people who were trying to help you from your other posts, doing some active testing and posting the results???? At this point, why don't you do a compression test and post the numbers. Was it knocking? Trouble shooting is a logical, systematic approach to isolate the actual problems. We can speculate all day long, that's our job, we're proud, we're Moparts Members; but if you don't start with the basics and post actual results, it's going to be tough to help you. You need compression, fuel and spark to have combustion, and they have to be consistent if you want to have a nice chain of combustion events, take one away or have it be inconsistent, and you will have the problems you describe. The concept of trouble shooting does not mean you figure out whats wrong with it, perform one test, and you hit the nail on the head every time the first time. It means you go through a series of steps to both find, eliminate and/or narrow down what it is or what it is not. Stick with the basics and be methodical! Step one: check the general mechnical condition of your motor. One time tested way to do this is to do a compresion test and post the results.
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Re: very sad 440-6
[Re: jbc426]
#254064
03/15/09 09:48 AM
03/15/09 09:48 AM
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Anonymous
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living in Wisconsin the car sits all winter. I started it for the first time yesterday. The engine has about 200 miles by a pro shop rebuild. We have done everything from compression to vacuum to spark to fuel and everything looks good. The problem is that after 20 minutes of idling the car shuts itself off and will not restart until it sits for a half hour. The one sure thing I know is that the battery is very low because when I jumped it with my F-150 it really dragged the truck down big time. Now when the car guits I have no equipment to see what happened and that is why I am asking you guys if you have ever experienced this. I have adjusted the center carb three times now to check myself and the internal vacuum is at 18, when cranking the engine the spark would start a fire ten feet away it is that strong. This is a pointless ignition and everything is totally new. So that is why I am wondering if the alt. can not keep up with charging the battery and running the car and that is why it quits after a while.
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Re: very sad 440-6
#254065
03/15/09 10:03 AM
03/15/09 10:03 AM
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Joined: Mar 2007
Posts: 3,291 West Coast, USA
jbc426
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Posts: 3,291
West Coast, USA
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Put the battery on a charger. Is you charging system working on the car? It's cranking over once it dies or you wouldn't know it won't start, so you obviously have enough juice to keep the ignition running if it has enough power to crank the engine, right?
Also, if it wasn't running like this when they checked the compression before, what good are those test results? You need to get test results from what it is doing now. You may have flattened a lifter or wiped out a cam lobe. That is not uncommon in these days of reformulated oils.
Do a compression test and post what the compression test results are? This will indicate the general overall condition of your motor right now. With only 200 miles on it, something could have gone wrong. Ask me how I know....
Do you have the tools and such to trouble shoot any of this? If not either find someone who does and knows how to use them, buy the tools and learn how to use them, or take it to a shop.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: very sad 440-6
[Re: RodStRace]
#254068
03/15/09 11:22 AM
03/15/09 11:22 AM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
If you read any shop manual, it will tell you that you MUST have a fully charged battery to perform testing. Do not pass go, do not collect $200. Charge or replace the battery before you do anything else.
when it's running is it running good? How hot does the coil get? If you have a "hot" ignition system sometimes they run like dood oo when the battery is low or your alternator is going south? Are you using the standard 35 amp or did you upgrade? I had a coil go bad once and it did the same thing you car is doing..only mine lasted 10 miutes.
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Re: very sad 440-6
[Re: RUNCHARGER]
#254071
03/15/09 12:22 PM
03/15/09 12:22 PM
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Joined: Jan 2003
Posts: 6,185 Bridgeport, WV
Michael
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Bridgeport, WV
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Quote:
Too many cooks can ruin the soup, however you stated that when you jumped it with your pickup that it really dragged the pickup down. One thing I would try is to remove the battery and put in a different battery, the battery in the car could have developed a short which would cause the problems you are experiencing.
Sheldon
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Re: very sad 440-6
[Re: Michael]
#254072
03/15/09 01:08 PM
03/15/09 01:08 PM
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Joined: Oct 2005
Posts: 708 Mechanic Falls, Maine
4BBodies
mopar addict
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mopar addict
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Posts: 708
Mechanic Falls, Maine
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I wouldn't waste time with the current battery, it sounds like it is on its way out. Swap it for a known good one, or buy a new one. Then, as mentioned above, do a systematic check of everything, BEFORE you fire it up. If it has points, file them a re-set them. Check the fuel filter. Sitting is the absolute worst thing for old cars, that's why I start mine every couple of months, regardless. And I live in the snow belt, so it isn't easy, it is bloody cold in my storage building! Good luck, I hope it is just your battery!
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Re: very sad 440-6
[Re: mt162]
#254074
03/15/09 01:39 PM
03/15/09 01:39 PM
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Joined: Jan 2003
Posts: 20,226 Park Forest, IL
slantzilla
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Posts: 20,226
Park Forest, IL
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Put in a good battery and good gas or you'll be chasing your tail forever. The charging system was never designed to recharge a fully discharged battery, just to keep up with demand and replace what is lost during starting.
"Everybody funny, now you funny too."
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Re: very sad 440-6
#254077
03/15/09 02:02 PM
03/15/09 02:02 PM
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Joined: Apr 2004
Posts: 684 Maine
jerseybud
mopar
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mopar
Joined: Apr 2004
Posts: 684
Maine
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Quote:
The problem is that after 20 minutes of idling the car shuts itself off and will not restart
You mean fast idle and not idle idle for 20 minutes right? or are you sitting in the drivers seat or manually moving the throttle? maybe i missed it, but this thing has fresh gas right?
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Re: very sad 440-6
[Re: gtx6970]
#254078
03/15/09 03:24 PM
03/15/09 03:24 PM
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Anonymous
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It is a pointless ignition. I just changed the fuel filter to make sure the one I had was not bad, started the car and afrer 15 minutes it shut itself off again. I looked at the float level in the center carb and it was at the bottom of the hole so I am guessing it is not fuel so do I try a new modual on the fire wall next? Advance Auto parts told me this morning that a coil is either bad or good no fixing itself for a while and then going bad again.
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Re: very sad 440-6
[Re: Mr.Yuck]
#254079
03/15/09 03:27 PM
03/15/09 03:27 PM
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when it runs it runs good though when I throttle it quick it backfires out the exhaust. When I try to restart it after it shuts down it once to backfire out the center carb
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Re: very sad 440-6
[Re: RUNCHARGER]
#254080
03/15/09 03:31 PM
03/15/09 03:31 PM
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Anonymous
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kind of funny because this is the second battery in the car in six months, the first on went bad in a few weeks. Could the battery shut the car down?
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Re: very sad 440-6
[Re: jerseybud]
#254081
03/15/09 03:34 PM
03/15/09 03:34 PM
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it has fresh no ethanol gas with octane boost and no I am not in the car it is idling and 800rpm's for twnty minutes and qu9its like someone pulled the coil wire.
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