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  #1  
Old 07-02-2013, 10:45 AM
ls1swap ls1swap is offline
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Default no spark past coil 1995 1500 318

I have a 1995 ram 1500 318 215,000. was driving and it just died as if the key was shut off. troubleshooting i have fuel and spark at the coil but not at the plugs. what do members think it is? electronic ignition or timing chain? i have replaced all the spark plug wires.

thanks in advance
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Old 07-02-2013, 02:25 PM
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When you say no spark after the coil...is there spark between the coil and the dist? If that's the case it could be a faulty plug on the coil, or the coil itself.

So let me ask. Is there spark going into the dist from the coil?
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Old 07-02-2013, 05:43 PM
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I get spark when i place a spark tester between the coil wire and center of the dist. if i place the tester between any spark plug wire and spark plug no spark. I am starting to guess pickup coil or timing chain
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Old 07-02-2013, 06:05 PM
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You can rule out the timing chain completely.

I'd be willing to bet it's the pick-up. There are a couple other components in there that could do it. Make sure there's no play in the rotor shaft.

I'd personally pay $50 and get a used dist out of a running truck at a recycler.
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Old 07-08-2013, 02:10 AM
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why can I rule out the timing chain? I did replace the cam possition sensor and no change. sorry for taking so long to continue this thread i have been working 4 12 night shifts but i am off till friday now

on a second note I can hear a high pitch tone coming from the ECM when the kay is on is this normal????

Last edited by ls1swap; 07-08-2013 at 02:22 AM.
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Old 07-08-2013, 12:25 PM
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Quote:
Originally Posted by Warlock III View Post
When you say no spark after the coil...is there spark between the coil and the dist? If that's the case it could be a faulty plug on the coil, or the coil itself.

So let me ask. Is there spark going into the dist from the coil?
Because the timing chain is a mechanical component of the engine that synchronizes the top of the engine (valves, lifters, dist etc...) with the bottom half of the engine (crank, pistons, etc...)

If the timing chain were stretched and/or the gears worn it may have skipped a tooth or two. However, you'd still have spark. Albeit at the wrong times and erratic, but there's still be spark.

No the ECM shouldn't make any high pitched whines.
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Last edited by Warlock III; 07-08-2013 at 12:26 PM. Reason: typos
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Old 07-08-2013, 03:03 PM
Gen1dak Gen1dak is offline
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Not so sure it's that simple with a computer involved. The computer looks for the cam sensor signal from the distributor, and, in coordination with the crank sensor signal, determines ignition and fuel injection timing events. Without that information, or if the synch is off from a bad timing chain, I'm thinking the computer may not fire at all. I've run an older RAM ('84 Ramcharger 318) with jumped timing. It was rough, but got me home at a cost of a couple punctured rockers and some bent pushrods. There was no computer to step in and shut it down. It would really have to be a worn timing setup to jump timing. The fuel injection chains are much better than the earlier models, but it's still possible.
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Old 07-09-2013, 08:18 AM
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my thinking is that the ecm is functioning otherwise there would be nothing to make the coil fire. so i am thinking now it is either the coils spark is too weak or the timing has jumped and its firing halfway between contacts in the distributor. my only question is where is this spark from the coil finding ground if not through the plugs????
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Old 07-09-2013, 01:44 PM
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Quote:
Originally Posted by Warlock III View Post
When you say no spark after the coil...is there spark between the coil and the dist? If that's the case it could be a faulty plug on the coil, or the coil itself.

So let me ask. Is there spark going into the dist from the coil?

It's difficult to attempt assistance when I can't get a simple answer.

Good luck Gen1
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Old 07-09-2013, 11:44 PM
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Upon review, I agree with Warlock III. Even if the coil were weak you'd still get something. The power stops at the distributor. Whether it's a faulty part in the distributor or the distributor itself, there's your trouble.
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