popping sound while starting - JeepForum.com

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post #1 of 16 Old 04-15-2013, 06:16 AM Thread Starter
bogleparsons
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popping sound while starting

Anyone ever experience a popping sound, from under the hood while starting.

Occasionally mine will POP and not want to start. Damn thing sounds like the intake manifold or something is going to blow apart.


If it's not supposed to move and does use duct tape.
If it's supposed to move and doesn't use WD40
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post #2 of 16 Old 04-15-2013, 07:48 AM
Que89YJ
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Backfiring when you are starting? You need to get under the hood and see if you are backfiring.
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post #3 of 16 Old 04-15-2013, 08:02 AM Thread Starter
bogleparsons
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well I can only be once place at a time, and it happens when cranking.

The Jeep idles ok I guess even though it's high (about 1500rpm) no backfiring during idle, though it will when you turn it off ONLY after driving.

If it's not supposed to move and does use duct tape.
If it's supposed to move and doesn't use WD40
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post #4 of 16 Old 04-15-2013, 08:47 AM
pete1991YJ
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Makes me wonder if the timing chain is loose, or the timing is off somehow.

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post #5 of 16 Old 04-15-2013, 08:56 AM
Siva283
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Turn the key to on. Make sure its in neutral and the brake is set. Use a wire to jump the pins 30 and 86 on the starter relay. Then you can start it from under the hood. I owe Que another thanks for teaching me that trick.

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

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diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

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post #6 of 16 Old 04-15-2013, 05:46 PM
Que89YJ
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So you do have backfiring then. How many miles on it? For backfiring it is usuall your timing is off or you have carbon build up in the cylinders.
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post #7 of 16 Old 04-15-2013, 05:47 PM
Que89YJ
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Timing can be off because the chain is streched. That is why I asked the mileage.
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post #8 of 16 Old 04-16-2013, 04:08 AM Thread Starter
bogleparsons
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yes I do have back firing. It started late last year and is sporadic 178k,xxx miles.

If it's not supposed to move and does use duct tape.
If it's supposed to move and doesn't use WD40
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post #9 of 16 Old 04-16-2013, 06:58 AM
Que89YJ
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You need to listen to it when it is running and see if you can hear the chain slapping against the cover.
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post #10 of 16 Old 04-16-2013, 07:52 AM Thread Starter
bogleparsons
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I think I do hear it slapping against the cover. Man what kind of job am I looking at here?

If it's not supposed to move and does use duct tape.
If it's supposed to move and doesn't use WD40
bogleparsons is offline  
post #11 of 16 Old 04-16-2013, 08:34 AM
pete1991YJ
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Looking at a new timing chain set, with gears and tensioner. Last I checked it was about $70 at Autozone. Probably a couple hours wrenching with a few standard end wrenches and a puller for the balancer. One trick I always do is to make paint marks on everything so I know its all pointing the same way instead of being disturbed.

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post #12 of 16 Old 04-16-2013, 08:48 AM
Que89YJ
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mark the distributor and rotor too. It's not too bad a job. Just a lot of disasembly to get at it.
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post #13 of 16 Old 04-16-2013, 09:10 AM Thread Starter
bogleparsons
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OK I just read a thread on replacing the gears and chain.
I think I can handle it.
wish me luck breaking the news to the wife haha

If it's not supposed to move and does use duct tape.
If it's supposed to move and doesn't use WD40
bogleparsons is offline  
post #14 of 16 Old 04-16-2013, 09:42 AM
ROTTEN
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Get on advanceauto.com

Part # 76070
And part #*TCS 45458

And use promo code
Retmenot124

Your total will be
$48.98 + tax

Pay online and goto the store and pick it all up.

I'm new
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post #15 of 16 Old 04-16-2013, 11:00 AM Thread Starter
bogleparsons
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Quote:
Originally Posted by ROTTEN View Post
Get on advanceauto.com

Part # 76070
And part #*TCS 45458

And use promo code
Retmenot124

Your total will be
$48.98 + tax

Pay online and goto the store and pick it all up.
Woot Thanks everyone!

If it's not supposed to move and does use duct tape.
If it's supposed to move and doesn't use WD40
bogleparsons is offline  
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