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| Engine knock diagnosis; I have a stethoscope | |
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| Tweet Topic Started: Oct 18 2017, 02:49 PM (491 Views) | |
| Snertsky | Oct 20 2017, 09:27 AM Post #16 |
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Elite Member
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Hey folks, it looks like I have 2 options now. 1) I can delete my GMF account and never show my face around here again OR 2) I can admit that I am indeed an idiot with more to learn than I thought. Yesterday the words of suzukitom ringed in my ears as I listened to the noises my car makes during my long commutes. ".....might also indicate your timing belt tension is set too tight." When I got home, I popped the hood and tried to depress the belt on the long side and it was tight as could be. This didn't make much sense to me because I made certain it had some slack when I re-installed it the night before. So I jumped on here and started searching around for timing belt tension issues. I couldn't find the thread, but I remember reading somewhere that someone (maybe the mullet) had said that the expansion of the engine as it warmed up, would take up slack in the timing belt. So I let the car idle and get good and warm. I quickly loosened the tensioner and set it with a little tiny bit of slack and full temp. I actually had to pull the spring back (a very tiny bit) to get this setting. I did notice that when I would tighten the 10 mm set bolt first, the tensioner bolt (12mm) would take up a little slack in the belt when tightened down. I'm wondering if maybe this has been my problem. Setting to what should be ok and then that little extra tension is pushing it over the edge. Anyway, I goofed up. When I fired it back up, BOTH noises had subsided! The "wow wow" was gone and the "knock/tick" was just a VERY VERY light tappety tap tap that sounds like and engine doing it's job. I can barely hear it with the stethoscope and it's not audible by ear. The tensioner bearing noise is still alive and well, but that's a known as opposed to an unknown noise. I will report back after I drive it today. I have plenty of time to listen for noises on my daily commute. THANK YOU GMF!!! Suzukitom, I was wondering if you knew a place to source the tensioner bearing to get the OE replacement? I've always looked for OE replacement options on rockauto and then searched the google with a part number. They don't show what was OE, but have an AC Delco part? Also, I was really listening for noises after all that last night. I pulled the top hat of the air box and the air filter to see if I could better hear a different soft tick. It's coming from the injector, confirmed with the stethoscope. Is this normal? A quick google search turned up nothing. I'll start another thread if this becomes a bigger problem needing a long answer. Edited by Snertsky, Oct 20 2017, 09:41 AM.
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| freegeo | Oct 20 2017, 10:28 AM Post #17 |
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The original GM part number is 96065049. If you want the real deal you would have to find something in a AC Delco box or suzuki bag. There are parts available on rockauto with that number. The ticking sound is normal for a injector. If you don't hear that then it isn't working. Edited by freegeo, Oct 20 2017, 11:02 AM.
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| suzukitom | Oct 20 2017, 02:52 PM Post #18 |
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Tom
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The Suzuki OEM part is getting harder to find since most Suzuki Swifts sold in USA were G13 4 cylinder engines and the G10 3 cylinder cars were sold as Geos through GM dealers. Below is a cross reference picture showing other part numbers that are equivalent to: Suzuki OEM PN 1281086500 or 1281086501. (same as GM/Geo PN 96065049) If you want to get an OEM tensioner, send a PM to Brad Bowens (bbowens) as he sells OE Suzuki parts here and on eBay. Most OE grade tensioners sold alone will cost around $30 to $50, or sometimes they are cheaper if you buy it bundled with a timing belt kit. ![]() btw, the video showing how to set timing belt tension correctly after the engine is run and warmed up was by posted by Snowfish Snowfish post: http://geometroforum.com/single/?p=3002363&t=8015110 Edited by suzukitom, Oct 20 2017, 03:20 PM.
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| Snertsky | Oct 20 2017, 05:02 PM Post #19 |
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Elite Member
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Cool. Thank you all very much for the information. I'll try to budget for the tensioner next. It seems to have quieted down a bit. Probably from less stress on it now. I think I killed it when I tightened up my timing belt the first time after cam and crank seals. That video shows one shiny looking engine I think I've got all my leaks fixed so I may have to clean it up. Thanks again.
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3:49 AM Jul 11