Replaced all the plugs, wires cap and rotor,
this jeep has been sitting for 4 years I am going to buy a carb rebuild kit and rebuild the carb and go from there,
Any suggestions
86 jeep command, after I replaced all the wires and plugs and cap and rotor it started right up and idled nice and as soon as I put it in gear it stalled out and then it went back to the wont start and backfiring again86 jeep command, after I replaced all the wires and plugs and cap and rotor it started right up and idled nice and as soon as I put it in gear it stalled out and then it went back to the wont start and backfiring again
86 jeep command, after I replaced all the wires and plugs and cap and rotor it started right up and idled nice and as soon as I put it in gear it stalled out and then it went back to the wont start and backfiring again86 jeep command, after I replaced all the wires and plugs and cap and rotor it started right up and idled nice and as soon as I put it in gear it stalled out and then it went back to the wont start and backfiring again
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Re: engine wont start it backfires through the carb
Make sure the timing is correct. Backfiring is often caused by an engine out of time.
Good idea on the carb rebuild. It may be letting too much gas in.
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What's the history?... unknown, was running just before tune up and now it doesn't, first start in 15 years,, other?
Backfire would imply timing and or stuck valve(s). The different Ford V8s have different firing orders. Be sure you have identified the specific engine and are referring to the correct diagram.
You can try retarding or advancing the timing a few degrees by turning the distributor.
You may not have properly located cylinder 1 on the distributor cap. You need to find compression stroke of cylinder 1 and bar over engine to TDC. Then remove distributor cap. The distributor rotor will point directly at distributor cap cylinder 1 plug wire tower.
If it's an old engine or has sat for years you will need to do a compression test of all cylinders.
You said the problem happened right after the engine was replaced correct? If so bring number cylinder to top dead center on the compression stroke. Remove the distributor cap and see if the rotor is lined up with the number one spark plug wire. It's possible the distributor was installed 180 degrees out.
You will need to narrow down your possibilities...do you have spark? do you have fuel going into the engine? Since you mentioned a storm, I'd look at spark first, checking the condition of the ignition wires cap and rotor. Wires should be dry, cap and rotor should not have any carbon tracks between any of the internal contacts and should be dry as well. Check for spark at the plug end of any wire and if none is present, check again at the wire from the coil to the cap at the cap end. If the engine starts when carb cleaner is sprayed into the throttle body then the problem is on the fuel side, requiring diagnosis in that system. Most common failures are crank position sensor and fuel pump but before going there, get a manual such as Haynes or Chilton and do tests outlined. Most parts are expensive and difficult to get at...you only want to replace what has failed.
My 99 v8 gas ran fine before it went for a barge ride to alaska. weeks later it acted like timing was off, kick back when cranking etc. Corrosion had build up in cap and rotor from the salt air. First cleaned contacts and was much better, ordered and replaced cap and rotor, problem solved.
take off your distributor cap and turn the engine over, does the rotor spin around? if not might be your timing belt! and if it does spin it still could have jumped a tooth on your timing belt? can you poor a little gas down the carb ? will it try to start? if it does but backfires then your timing belt may have jumped a gear or two...
you are off the timing by a tooth or two. when you replaced the cap and rotor, if you did not mark the position of the rotor with some point on the motor or firewall, then it is likely that you installed the rotor by a couple of degrees. so, when you are going up hill, and the engine needs to advance the timing to add power you timing is off even more causing lack of power and sputtering and backfiring.
I had the same problem with my 85 cj7 this week, I relpaced the ignition control module, plugs, wires, cap, rotor and the the coil; still had no fire to plugs. the problem turned out to be my distributor, replaced it today and she fired right up. Most likely it was the pick up module in the distributor that went bad.
86 jeep command, after I replaced all the wires and plugs and cap and rotor it started right up and idled nice and as soon as I put it in gear it stalled out and then it went back to the wont start and backfiring again
86 jeep command, after I replaced all the wires and plugs and cap and rotor it started right up and idled nice and as soon as I put it in gear it stalled out and then it went back to the wont start and backfiring again
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