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-   -   popping sound while starting (http://www.jeepforum.com/forum/f12/popping-sound-while-starting-1509501/)

bogleparsons 04-15-2013 06:16 AM

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.

Que89YJ 04-15-2013 07:48 AM

Backfiring when you are starting? You need to get under the hood and see if you are backfiring.

bogleparsons 04-15-2013 08:02 AM

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.

pete1991YJ 04-15-2013 08:47 AM

Makes me wonder if the timing chain is loose, or the timing is off somehow.

Siva283 04-15-2013 08:56 AM

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.

Que89YJ 04-15-2013 05:46 PM

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.

Que89YJ 04-15-2013 05:47 PM

Timing can be off because the chain is streched. That is why I asked the mileage.

bogleparsons 04-16-2013 04:08 AM

yes I do have back firing. It started late last year and is sporadic 178k,xxx miles.

Que89YJ 04-16-2013 06:58 AM

You need to listen to it when it is running and see if you can hear the chain slapping against the cover.

bogleparsons 04-16-2013 07:52 AM

I think I do hear it slapping against the cover. Man what kind of job am I looking at here?

pete1991YJ 04-16-2013 08:34 AM

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.

Que89YJ 04-16-2013 08:48 AM

mark the distributor and rotor too. It's not too bad a job. Just a lot of disasembly to get at it.

bogleparsons 04-16-2013 09:10 AM

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

ROTTEN 04-16-2013 09:42 AM

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. :)

bogleparsons 04-16-2013 11:00 AM

Quote:

Originally Posted by ROTTEN (Post 15303545)
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!


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