 Hey guys, welcome back to titanium man garage. I was going over this machine a while back ago. There's a video. I have I did a complete rebuild on the motor gone through a couple of issues with it Electronics were all messed up. I've had some backfiring issues with it. So Once you're two different carbs thought that might be it once for the electronics Thought that might be it. I even checked to see if I got any leaks anywhere because what's going on right now is It idols beautifully, but when I rev it up and I let off the accelerator. It wants the backfire So usually it's two different conditions one it's either running lean sucking in air in the carb and Backfiring to me. I pulled the spark plug. It was black So that made me think it was running rich Another issue with these this is like a 99 so 98 2001 they had bad cam issues so when I rebuilt the motor I put the head on with the cam the original and Fired it up and it seemed to be fine. The cam did look good Seeing that I went through everything. I Think I might replace the cam Let me fire this thing up and show you what's going on And I'm gonna show you a couple tricks on how to test for air leaks So you know if it's you know your intake boots cracked or ear sucking in from somewhere, so Hang tight. Let me get this thing fired up That leads me to believe there's a issue with the decompression ball the test you can do Is check for air leaks on your intake boot right here, so I'll spray a little Carb cleaner around the boot anywhere that there might be cracks and then if it revs up Then I know there's a leak So I'm gonna fire it up and we're gonna spray a little carb spray. Nothing's rubbing up. There's no air leaks So that leads me to believe there might be a cam issue You said I put two different carbs on that were both clean and rebuilt and ended up with the same issue So let's go through taking the cam off and I'll show you what I do All right, I might do this in a little different order than most people but Let me pull that spark plug out and I'll show you what looks like black spark plugs black It's telling me it's either running rich or the exhaust valves aren't staying open long enough So I'm gonna check the cam first Like as they've gone through the carb and the electronics already Once I get everything apart, I'm gonna make sure the engine's There's two little dimples right here. I'm gonna make sure I'm a top dead center There's also if you pull this plug There is a place that'll It's like a little arrow in there I'll Show you exactly where you a little bit more yet. I can usually tell by the valve wash two dimples are here That's up there So I'm gonna go ahead and pull this off And I'm gonna let the tensioner actually Hang on to everything. I don't lose the chain 10 millimeter socket Normally I'd have this stuff moved out of the way, but today I'm trying kind of cheating a little bit here I'm gonna pull this gear off the cam and tensioner is just gonna hold it in place Now I'm gonna take The rockers off It's a 10 millimeter socket. So I'll show you where I'm at here took these Four bolts off. This is my last remaining one I'm gonna take the rockers off usually Just wiggle off, but I might need a screwdriver to pull this off Rockers off actually looks pretty decent. I can actually spin this if I wanted to and Check see if there's anywhere on that cam For me it would probably be just easier to pull it out So now in order to get the cover off for the cam you have to pull This line Show you a little cheat here That hose off so I don't drain the radiator So I can access this to the you get a little cool and dripping but Not as much as you were to drain the whole radiator Now I can take the cover off for the Cam I like to check is ah I see a problem. There's no spring in there for the cam Decompression ball actually it is in there. It's not on Let me pull that cam out. I'll show you what I mean cam actually looks pretty good, but It's supposed to be spring here and that keeps the decompression ball in and out and That is not Look at it. That's actually out further than it should be So that might be my issue. Alright guys, I don't know if you can see that Sorry my camera zooms in and out, but there's a little spring Back here, and then you can't see it in the camera And when this turns Decompression ball goes in and out. So this was just flopping around the spring isn't even in the right position I'm gonna flip this upside down You get the spring in the right position See it should spring back when you do that and it's really not so the spring is not in the right position I'm also gonna check the the cam lobe it should be at See what is it one point two eights, I believe One point two nine would be better Let me grab my caliper and find out what I got so I'm out one One point three with us. So this is a good cam So I just have to fix that decompression issue All right, so I actually had to look At another cam just double check called the spring let all right I know you guys aren't gonna be able to see this in the camera, but part of the spring Took closest towards the cam Goes on top of the snub Then the other part of the spring sits on here, and now it kicks back like it should So I think my decompression ball was stuck open or Stuck close I guess it'd be stuck close. It's just probably why it was kicking so much Exhaust back into the carb into the spark plug See now it moves up and down like it should I think it was stuck and that's why I was putting back pressure and Making the spark plug black. So I'm gonna go ahead and stall us. This is within spec I Actually, I do see a little wear here. Yeah, I will put another cam in. I don't know yet So I'm gonna put this back in and I'll get everything lined up on the other side And I'll have to take the timing chain tensioner off which is located here So I'll pull on two bolts off take the tensioner off Get the cam back on the cam gear and Put everything back together And I get the valve lash set at point zero zero six And go from there Now this comes off with a 12 millimeter wrench and Then I can press this in and push that back in and put the Tensioner back in pull that off. There's a spring behind there when you press that tab Push that in gasket back on Screw this back down spring on the tensioner in you can hear it clicking as I'm tightening it up. It's good Still at top dead center This is still correct This is working like it should so before it was the spring wasn't in the right position and It was causing issues Go ahead tighten that up. I got this part. I'm gonna put a brand new thermostat in They don't trust the Old one that was in there. That's why when I remove the Thermostat cover you didn't see it's the thermostat in there. I Had a feeling I was gonna have to do this. I never put a thermostat back in brand new one Back on Hey Not even really much of a mess. So I'm looking at my rockers here They do look like they have a little wear on them. I got another set of rockers. I think I might try Maybe that'll help too Think a nice clean set. I'm gonna go ahead and throw those in Put these back in and then I got to go ahead and reset my valve lash And I'm gonna fire this up. I Have a video on how to set valve lash. I'm not gonna show it in this video I get it this all torqued on just a valve lash right here here 0.006 and I get this all bolted up and hopefully the next time You see this it'll be running good. Hey guys, just to show you what I did loosen those nuts and turn the screws and My valve lash is pretty good. You want a little bit of drag on there next. So Doing this at an angle with my left hand Moving it out. It's just a little bit of drag. That's perfect I'm gonna go ahead put my rocker cover back on my spark plug in there this bad boy up All right time for the final test if it worked. I thought it was the cam Turned out to be the spring on the decompression ball Shaft hit the thumbs up if you like the video subscribe. I've got hundreds of videos and like always till next time