Re: 76 chrysler 85hp will not run!!!!HELP!!!!
WOW! You still have not fixed the problem since August?
OK! If the flywheel key has sheared, the flywheel will still turn when the engine is cranked.
HOWEVER, let's back up a bit. Let's not jump to confusions.
The engine was running well, you shut it down to fish--it did not stop on its own. So first, let's pretend everything is ok but the engine won't fire.
You can crank it so the neutral interlock is good--eliminate that. You get spark on all three plugs --so temporarily eliminate ignition. You get fuel to the carbs, but that does not mean fuel to the cylinders.
SO: remove all three plugs and squirt about a teaspoon of fuel/oil mix into each cylinder. This will flood it. Replace the plugs (hand tight is good enough for now) and crank without choking the engine for about 15 seconds until it clears itself and fires. If it fires, then the problem is fuel related and at or after the carbs. If it does not fire, then it becomes ignition. Now, your Magna power Motorola ignition is designed to spark once each time it is signaled by the points, which by the way should be set to .010 open when on a lobe.
IF you turn the flywheel by hand very slowly with all the plugs out and grounded and the key on, you will be able to see and hear the sparks. If you turn the flywheel slowly enough or pause at the firing point, as each cylinder comes up to fire, you should get only ONE spark. IF you get multiple sparks or a constant spark on each plug (bzzzzzt), the CD box is bad. While you see sparks at each plug, this engine will never start or even try to.
Now, with the plugs out and grounded, and the ignition on, again turn the flywheel by hand slowly. With the control handle in neutral position you should see the top plug fire at about 0 degrees--plus or minus a couple. With the control handle in wide open throttle, you should see spard about 32 degrees before top dead center. If tis is so, the crankshaft key is not sheared and timing is correct.
Now, back to carbs: Take 'em apart and clean them there may be some crud clogging the inlet needles or low speed passages. While you have them off look into the holes in the manifold and check the reeds. There should be ten on each vee block and none should be broken or bent.
Some plugs will fire in open air but under compression will misfire or not fire at all. Put in new plus of a different brand--like NGK BUHW and try to start.
And while you are at it, put a cheap disposable inline filter BETWEEN the fuel pump and carbs.
