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#1
10-08-2006, 10:38 PM
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Kocking.. Won't Start
My girlfriends 97' Lumina with 160000 miles knocks really hard and won't start after sitting for a couple of hours. It takes a few tries to get it started... Suggestions?
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#2
10-09-2006, 12:31 AM
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Re: Kocking.. Won't Start
Hmm, losing coolant but can't find where? Most likely the engine is toast..
__________________
2007 Certified DaimlerChrysler Service Technician... True blue GM at heart.
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#3
10-09-2006, 08:43 AM
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Re: Kocking.. Won't Start
It was leaking anti-freeze a few months ago..We had some kind of gaskets replaced and everything seemed fine. I did notice something on the drive way but I figure it was from air conditioner. What do you think.. Anti-Freeze level did kind look low? Anything we can do right now?
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#4
10-09-2006, 09:14 AM
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Re: Kocking.. Won't Start
Sounds like it spun a bearing or something equally awful.
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#6
10-09-2006, 10:46 AM
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Re: Kocking.. Won't Start
I'll assume the "knock" is piston slap, which sooner or later is going to blow the engine. I'll also assume that the engine still starts, just not right away. Correct me if my assumptions are wrong. First thing to check is for cloudy/milky oil. This would indicate coolant in the oil and that's bad, indicating a head gaket or another intake issue. How long has it been since a tune-up has been done? Most hard start situations involve worn plugs, bad wires, etc..., so don't look for big problems until regular maintenance has been done.
__________________
 Still waiting for the "good old days" I'll get to bore my future grandchildren with!
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#7
10-09-2006, 02:26 PM
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Re: Kocking.. Won't Start
I assume you had the intake gaskets changed? It may have not been caught quick enough and did damage to the rod/main bearings, and possibly the cam bearings. Piston slap is also a real scenario. Either way, your looking at most likely an engine replacement..
__________________
2007 Certified DaimlerChrysler Service Technician... True blue GM at heart.
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#9
10-09-2006, 07:39 PM
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Re: Kocking.. Won't Start
The coolant isn't leaking and the oil looks fine. The car didn't knock when I tried it. It only happen maybe 2 of 5 times but when it does happen it won't start. Possibly be just needed a full service.. Plugs wires.. the works?
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#10
10-09-2006, 11:31 PM
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Re: Kocking.. Won't Start
Actually, piston slap is a common occurance with 3X00 engines. GM admits it, but states it's normal. Piston slap will dis-appear once the engine is warm, because the piston will swell up and fit the cylinder better.
__________________
2007 Certified DaimlerChrysler Service Technician... True blue GM at heart.
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#11
10-10-2006, 12:19 PM
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Re: Kocking.. Won't Start
It doesn't slap after being started.. It only knocks while being started.. I listen to it yesterday... Its not really loud but it does sometime cause the car not to start...
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#12
10-10-2006, 06:41 PM
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Re: Kocking.. Won't Start
Hmm, that's odd. Starter gear, flywheel maybe? It's hard to say without listening to it.
__________________
2007 Certified DaimlerChrysler Service Technician... True blue GM at heart.
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#14
10-12-2006, 11:30 PM
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Re: Kocking.. Won't Start
I have no idea.. I'm stumped.
__________________
2007 Certified DaimlerChrysler Service Technician... True blue GM at heart.
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