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1978 shovelhead harley davidson #1 cylinder acts like its floodin

It ran fine just started back firing threw the front cylinder just that plug smells like gas

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  • yankmenow199 May 23, 2009

    compression is good have a new setof points ordered lifters feel ok i'm running a s&s carb i checked everything else i'm hoping points do it could it be the coil?

  • yankmenow199 May 27, 2009

    thats what it was found a sever crack on the backside with gel ozing so i replaced it fired rtight up thanks

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You need to take compression check hold throttle wide open when you do this and see what the compression is but pull coil wire first so it dose not start do you have solid lifters or do you have hydraulics ones are you ruining points or electric ignition i would look at these area if compression is good if not bad valve or valve spring what kind of carb are you running check floats the stick some times. well hope this leads you some where

Posted on May 22, 2009

  • Earl Norager
    Earl Norager May 26, 2009

    well sorry long week end yes it could be coil check the spark or replace it they do go out on the shovelheads but it would not heart to think about electric ign. well hope this helps

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I have a 1978 shovelhead,It has been sittin for about a year last time I rode it ,it ran fine but anyway, I went to start it and it was hard to start, but I did get it started.it acted like it was running...


First, check your spark plugs. You said it was hard to start, you could have fouled a spark plug or since Shovelheads did not come from the factory with valve stem seals, oil could have run down the valve stem and dripped onto the spark plug fouling it.

If the plugs look good, it could be a vacuum leak at the "rubber bands" on the intake manifold. They do dry rot over the years and you might have a leak.

Or, it could be that the carb needs pulling, disassembling, and cleaning. Start with the least expensive thing first and work up.

Good Luck
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