Do a compression check; this will usually tell you if the timing chain went south. Probably bent some valves if it went. Check em all.
I just went through this with my 87 22r. I decided to pull the valve cover and see if the timing mark on the cam gear was on...and it was way off. Seems as though the timing chain guide decided to break which led to the chain itself jumping some teeth. I noticed it cranked a lot faster without that chain tension.DCabTaco said:Ok I have a 83 toy with a 22r motor. It cranks but wont start. It ran fine until all of a sudden it wouldn't start. At first I thought it was the ignitor, so I replaced it. Still no start. After more investigation I noticed it has spark and it is getting gas into it, but it cranks like it didn't have spark. My question is could the timing chain have either slipped, broken or maybe a timing chain gear. I am fairly new to the 22r motor and I'm not aware of the common problems that come about from it. Could it be anything else? I would hate to try to open up the engine without exploring all other possibilities. Any information would be gratly appreciated. Thanks.
First I will say I am far from a mechanic like many of us. I don't recall my timing chain being loose or sloppy after replacing it. However what is loose to one may not be loose to another. Perhaps the tensioner is shot? Could you tell if your guide rails are broken? If you haven't done a timing chain for 50,000 miles or more or don't know when it was last done might be a good idea to replace it. I recommend getting a timing chain kit from http://www.engnbldr.com/DCabTaco said:Yup it looks like the chain jumped 4 teeth. I took the valve cover off and set it to TDC. The dot on the cam gear is about 4 teeth before the top. The chain also appears loose. Just for my knowledge, should the chain be slightly loose when I install it? Like mentioned before I might have bent some valves. What else should I look at that might have been damaged by this?