Uh oh. It’s a Suzuki with a GM engine…that SNAPPED a timing chain 7k miles after replacement!!
The shop replaced the chains AGAIN, but now it only runs on one bank.
Is the engine TOAST, or is the timing just off?
Let’s gather some data and see if this thing is salvageable 🙂
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I find myself going into limp mode the older I get too!
Cloyes is an OEM supplier for almost all U.S. engines. A GM replacement part would almost certainly be a Cloyes. Sometimes new parts just don't work out of the box.
THis happened on a job I did with my pops. It turned out being the cam gear on his side never got tightened up– so it ran for 30 miles or so, and then the pin sheared and messed everything up on that bank. We had to tow it home and re-do the timing job all over again, and it was 25 degrees below. lol.. It was so stupid cold
Terrible job from the other shop to get it so badly out of time.
If it was my car, given that it's an interference engine, the valves would've smashed my pistons to heck and the entire engine would've blown up out of the vehicle on the free-way.
6:40 was painful
Very nice explanations.
Is this a double overhead cam engine? If so, I would wonder if the cam on that one bank is 180 degrees out. Seems the valve opens almost 180 degrees late (120 degrees).
Folks get the cam timing tool before doing this repair. The tool ensures the cams are in the right position. With the cams in the right position it is not possible to mis time only one cam. Cost me $7. All that work could have been avoided. But it makes for a good youtube video. Well done.
I've seen so many videos of guys doing chains where there are multiple marks on the sprockets. Why do these extra marks exist?
P0008 timing motor problem? I mean this code is for a timing loss?
My friend, You just scored some major points in my book. I had just did the timing in my 2013 cadilac cts 3.6L LFX. I did the chains since i was hearing an ever so faint chain rattle that was getting longer fairly quickly. The car has 74,500 miles and is about to be supercharged. So preventative chain and phaser swap, installed the whole blower system while putting her back together minus the belt and the tune. Started it up and immediately got the gnarly exhaust backfire into the intake kinda snorty sound that was a bit mechanical. It worried me and i had never heard anything like it. I had just gotten the cover off when your video came on in the background and i heard that evil sound!!! Heaven to my ears at the time. I though there were going to be bent valves or some serious damage of some sort. After watch this i am revigorated that reseting the timing with Melling parts over "the other guy" will leave me smiling in the end. The exhaust had jumped to where the phaser mark was 3 links off. Problem was the tensioner. Was it a fluke? IDK but the other guy is the usual go to for timing components in the after market, so keep that in mind.
hint it rhymes with cloyes. All GM phasers however. Maybe in a couple hours it can purr like a kitten also and i can slap the blower belt on, install the 3 bar map sensor, flash it with the tune and see what thats like. Thank you for the video in a simple, non drug out, format and all the good info. Im truly inspired
Well Doc, what's the prognosis?
Doc: Most likely, as would be expected the timing chain tensioner wore down over time, which is normal. This caused the timing chain to have too much slack. Under normal circumstances all it needed was to have the tensioner adjusted to take up the slack.
Since that was never done, the slack got so bad that the timing chain jumped out of time on the sprockets and in the process, in this case, it caused the timing chain to actually snap in two.
No matter what the brand, compared to other timing chains, this one looks to be a rather poor/cheap/weak design, and if anything, if possible, a beefier chain and sprocket set should be installed.
I don't know the stats on how frequent this type of failure has occurred do to the poor design but one has to wonder if a recall isn't in order, and/or a beefier set-up gets put to use n the future.
2007 to 2009 XL7's are "Suzuki" by name only, but they are not Suzuki, and it's not just a "GM Engine", this is a 100% GM vehicle with Suzuki emblem on it and there is no permanent fix for all of the issues theses GM monstrosities are plagued with.
XL7's to avoid like the plague = Model years 2007-2009 They are the GM garbage, nothing "Suzuki" about them. All GM product.
XL-7's that are decent, worthy and reliable = 2006 and under, those are the Suzuki designed and Suzuki built with an older, much more reliable GM 3.2 engine that was actually built by Suzuki in Japan under license from GM.
As they say , it's only as strong as the weakest link & in this case it is literally true .
Them guys ain't making much on that job! Ivan to the rescue…………………………….again! Rite On
One thing that contributes to these failures is GM put a 5w30 oil rating on them! So owners and the stealerships sell those cheap 30 dollar oil changes to get people in the door! All modern engines need synthetic oil that's why asian manufacturers went to 0w20 oil you can only get it on synthetic