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1st Gen Durango 1998 - 2003 Durango's

knocking engine

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  #1  
Old 12-24-2009, 05:20 PM
Donna'sDango Donna'sDango is offline
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Default knocking engine

Not a good sign. Somewhere around six months ago the engine started knocking upon a coldstart. Only lasts maybe 2 seconds. Did some research and apparently that's seminormal.but in recent weeks there's a knocking noise right before the trans shifts into 2nd gear.my wife is the one who drives it she 'claimed' it when we got hitched. So I don't knoe EXACTLY but I think it started abt 2-3 weeks ago. ANY help will be great, thanx guys
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Old 12-24-2009, 05:25 PM
Donna'sDango Donna'sDango is offline
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Oh, and for the last 3 years I've been RELIGIOUS about my oil changes. I use castrol gtx hm. But the ppl who owned it before me didn't take care of it at all. Mine may have been the 1st oil change, lol.also had to have the pump changed because all the sludge killed it.
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Old 12-24-2009, 10:21 PM
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Try higher octane fuel or change to a different fuel and at least 87 octane. Also whats your oil pressure?
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Old 12-25-2009, 05:34 PM
Donna'sDango Donna'sDango is offline
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I put 87 in it and the oil level usually sits just under 40.
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  #5  
Old 12-25-2009, 06:07 PM
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try bumping it up to mid grade, sometimes a low octance gas will cause it to knock, and its a relatively cheap thing to try, next would be cleaning the injectors (in tank cleaner works just fine at this point)
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Old 12-26-2009, 11:46 PM
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+1 Sharps!

Runnin some SeaFoam in the fuel is good as well even though I don't like using any additives. However if I run ANYTHING it is SeaFoam.
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Old 12-28-2009, 08:46 AM
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Mmmmmmmmkkaaaaaaaayyy, I will fill it up with high test and run some seafoam through the gas tank, I read up on the seafoam aplication. Seems like everybody has their own application method. Thanx for the advice guys we'll see what happens
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Old 12-28-2009, 11:38 PM
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if it gets louder full throttle in to a tree insurance is good knock on wood
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Old 12-29-2009, 08:45 AM
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if it gets louder full throttle in to a tree insurance is good knock on wood
lol! Lol! Lol!
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Old 12-29-2009, 09:13 AM
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Quote:
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if it gets louder full throttle in to a tree insurance is good knock on wood
dont try this i fyou love your truck, it will NEVER be the same again lol
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Old 12-29-2009, 11:49 AM
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It will take care of the motor!
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Old 01-29-2010, 07:56 AM
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Okay, been through a couple of tanks of premium 93 now, knocking is still there.... I LOVE my (wifes) durango. And I don't have an abundance of $$$. The knocking only starts at. About 1500 rpms. It sounds much more prominently when accelerating quickly. Am I f*cked?
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Old 01-29-2010, 11:55 AM
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what grade of oil are you running??? make sure you are using the correct weight, too thin oil can cause it (assuming it sounds like the start up tick),
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Old 01-29-2010, 02:35 PM
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Recheck the base timing. pull timing two degrees at a time if it is set proper untill the knock/ping stops. Ignition advance is likely the cause of the ping. could just be a lot of carbon build up in the cumustion chamber but in theory the seafoam would have helped there.
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Old 01-29-2010, 11:39 PM
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Recheck the base timing. pull timing two degrees at a time if it is set proper untill the knock/ping stops. Ignition advance is likely the cause of the ping. could just be a lot of carbon build up in the cumustion chamber but in theory the seafoam would have helped there.
Indexing the distributor COULD help but the timing is controled by the PCM and not by manual placement of the distributor (although it must be indexed). The PCM can Advance and retard the timing. Also, try and figure out WHERE the tapping sound is coming from?

The best thing is to correctly Index it.
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Old 01-30-2010, 08:39 PM
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I've been running 10W40 oil. I'm lost on the indexing part,
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Old 01-31-2010, 12:26 PM
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it sounds more like a rod knock or wrist pin to me if it is only happening at start up and when he just starts to accelerate.
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Old 01-31-2010, 03:39 PM
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Quote:
Originally Posted by Donna'sDango View Post
I've been running 10W40 oil. I'm lost on the indexing part,
You are running the incorrect oil! You should be running 10W-30.


As for indexing the distributor:

Tips and Tricks PDF
http://bionicdodge.com/Download/Spee...d%20Tricks.pdf


Look in here about mid way down. It means placing the distributor in the best timing position to the crankshaft at TDC (Top Dead Center). This allows the PCM to acuratly change the advance and retarding of the timing and also helps with fuel mileage.
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Old 01-31-2010, 03:39 PM
 
 
 
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