f7ben Posted March 28, 2018 Author Share Posted March 28, 2018 Tough to see on my phone GS but I would guess that cylinder wasnt firing at all. Maybe you lost a coil Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted March 28, 2018 Share Posted March 28, 2018 1 hour ago, f7ben said: That looks good to me....lean would be white well back up the electrode....not just at the tip Dude, it's pure white. Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted March 28, 2018 Share Posted March 28, 2018 It was firing. I know the difference between running on 2 cylinders versus 3 thank you Quote Link to comment Share on other sites More sharing options...
AKIQPilot Posted March 28, 2018 Share Posted March 28, 2018 (edited) 3 hours ago, GreenStreak said: Left to right, PTO, Center, Mag..... So the piston on the right is clean because of a coolant leak or no spark. That piston has been washed clean from most all carbon. No indication of being lean at all. Center piston is perfect. Left piston is slightly to moderately lean. Very little carbon washed at the transfer ports. I would be concerned with a piston that looked like the left piston unless it was babied all the way back to the trailer or something. Imo there was some sort of coolant leak that caused the mag side piston to be that clean. Nothing about that piston or the cylinder head and spark plug look lean. Just the opposite actually. The ground strap on the spark plug shows very little heat. That is not a lean condition at all. You can see on the grounding strap that the fuel:air ratio was rich on that cylinder. Show us the wxhaust side of the piston and skirt. A lean piston will be wasted on the exh side at least half way down to the skirt. Those cyls are nicasiled. You only want a slight hone with a cross hatch. Any aluminum buildup on the cyl wall has to be removed chemically with muriatic acid or something similar. Edited March 28, 2018 by AKIQPilot Quote Link to comment Share on other sites More sharing options...
f7ben Posted March 28, 2018 Author Share Posted March 28, 2018 Most would say not to bother honing nicasil. Just clean them up. Quote Link to comment Share on other sites More sharing options...
f7ben Posted March 28, 2018 Author Share Posted March 28, 2018 I'm going with bad coil , stator , ground etc etc. Should have been able to see an issue with an oring to be eating that much coolant. That cylinder wasnt firing Quote Link to comment Share on other sites More sharing options...
AKIQPilot Posted March 28, 2018 Share Posted March 28, 2018 (edited) 37 minutes ago, f7ben said: I'm going with bad coil , stator , ground etc etc. Should have been able to see an issue with an oring to be eating that much coolant. That cylinder wasnt firing A definite posibility. I want to see the piston and cylinder skirts. I like how gs put the pistons all in a row but didnt orientate the wrist pin bores correctly. WTF. More amature houre BS. This should be an easy fix. Edited March 28, 2018 by AKIQPilot Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted March 28, 2018 Share Posted March 28, 2018 7 hours ago, AKIQPilot said: A definite posibility. I want to see the piston and cylinder skirts. I like how gs put the pistons all in a row but didnt orientate the wrist pin bores correctly. WTF. More amature houre BS. This should be an easy fix. Lol wgas about that? Amateur hour my ass, I know how they go back In the bores. Quote Link to comment Share on other sites More sharing options...
f7ben Posted March 28, 2018 Author Share Posted March 28, 2018 Just now, GreenStreak said: Lol wgas about that? Amateur hour my ass, I know how they go back In the bores. Your posting pics for people to help you with and its tough to even get a feel for the wash when the pistons are hap hazard and you cant tell where the transfer ports are etc etc. You're overlooking some really important stuff here GS. Quote Link to comment Share on other sites More sharing options...
Anler Posted March 28, 2018 Share Posted March 28, 2018 8 hours ago, f7ben said: I'm going with bad coil , stator , ground etc etc. Should have been able to see an issue with an oring to be eating that much coolant. That cylinder wasnt firing Its an Arctic Cat Quote Link to comment Share on other sites More sharing options...
f7ben Posted March 28, 2018 Author Share Posted March 28, 2018 8 minutes ago, Nazipigdog said: Its an Arctic Cat My triple cat ran like a scalded dog for 600 trail miles this year......really a fun project. I love riding it on smooth trails Quote Link to comment Share on other sites More sharing options...
Anler Posted March 28, 2018 Share Posted March 28, 2018 7 minutes ago, f7ben said: My triple cat ran like a scalded dog for 600 trail miles this year......really a fun project. I love riding it on smooth trails I thought you were riding a CFR? Arent those twins? Quote Link to comment Share on other sites More sharing options...
f7ben Posted March 28, 2018 Author Share Posted March 28, 2018 Just now, Nazipigdog said: I thought you were riding a CFR? Arent those twins? I put about 650 miles on the CFR and A little over 600 miles on the ZRT1000 and 260 miles on the Pro-S this year and 50 miles on my buds old XCR Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted March 28, 2018 Share Posted March 28, 2018 Washed piston.... Quote Link to comment Share on other sites More sharing options...
Rod Posted March 28, 2018 Share Posted March 28, 2018 I’m at a loss for words Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted March 28, 2018 Share Posted March 28, 2018 1 minute ago, Rod Johnson said: I’m at a loss for words Why? Quote Link to comment Share on other sites More sharing options...
Rod Posted March 28, 2018 Share Posted March 28, 2018 3 minutes ago, GreenStreak said: Why? At how a mechanic could think that’s a lean butndown 1 Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted March 28, 2018 Share Posted March 28, 2018 2 minutes ago, Rod Johnson said: At how a mechanic could think that’s a lean butndown Numb-nuts, I did not think that was a lean burn down I think the PTO side was a lean burn down if you look at that fucking piston Quote Link to comment Share on other sites More sharing options...
Beavis and Butt-Head Posted March 28, 2018 Share Posted March 28, 2018 Piston pics looks good to me, looks way better than Honda CR125 pistons I had long time ago , that damn bike is sensitive to everything Quote Link to comment Share on other sites More sharing options...
Platinum Contributing Member Jimmy Snacks Posted March 28, 2018 Platinum Contributing Member Share Posted March 28, 2018 On 3/27/2018 at 12:01 AM, GreenStreak said: Ben did you not see how lean, how shitty the piston wash was on the mag piston? Its my fault ya dumb fuck. I knew it was going lean and i rode it anyway. D&D told me the carb boot was cracked and I shrugged it off because I did not want to spend the money right then. in reality I was going to buy one off eBay cuz it was way cheaper. I pulled a bonehead move and now it's going to cost me, so screw you. Happy now? Make up your mind. Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted March 28, 2018 Share Posted March 28, 2018 7 minutes ago, Jimmy Snacks said: Make up your mind. So miss spoke. Sorry. Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted March 28, 2018 Share Posted March 28, 2018 Hey Al, instead of trying to catch me in a lie or some stupid shit, why not try to offer an opinion or help with some good info? Oh wait.... This can't be fixed with paint and brush, so carry on with acting like an asshole. I'm sorry sir! 1 Quote Link to comment Share on other sites More sharing options...
AKIQPilot Posted March 28, 2018 Share Posted March 28, 2018 I’m still going with a coolant leak. The coolant washed the lubrication off the skirts and scuffed the piston. That is for sure not a lean burn down. There isnt even the slightest amount of aluminum missing from the top edge of the piston on the exhaust side. And no aluminum was drug across the top ring and ring groove. Not a lean burn down. Quote Link to comment Share on other sites More sharing options...
Platinum Contributing Member Skidooski Posted March 28, 2018 Platinum Contributing Member Share Posted March 28, 2018 (edited) 2 hours ago, GreenStreak said: Lol wgas about that? Amateur hour my ass, I know how they go back In the bores. The pic you posted of all three piston tops, you had them in different orientations...ie exhaust side up and down. Mag side is pointing down 24 minutes ago, GreenStreak said: Numb-nuts, I did not think that was a lean burn down I think the PTO side was a lean burn down if you look at that fucking piston Which cylinder do you think was giving you issues??? The one that has very little carbon build up came out of which side? Did you do.....a Leak down test? Compression test? Don't care so much the number as how even they are across all three. Check for good spark on all the cylinders? Check to see if the crank is in phase? Reeds good...no warped petals or chipped corners? Do you notice any change in idle? Any coolant come out of the pipes when you pulled them off? Any show up on the spark plugs? Was the coolant bottle pressurized? No sweet smell? Edited March 28, 2018 by Skidooski Quote Link to comment Share on other sites More sharing options...
GreenStreak Posted March 28, 2018 Share Posted March 28, 2018 2 minutes ago, Skidooski said: The pic you posted of all three piston tops, you had them in different orientations...ie exhaust side up and down. Mag side is pointing down Which cylinder do you think was giving you issues??? The one that has very little carbon build up came out of which side? Did you do.....a Leak down test? Compression test? Don't care so much the number as how even they are across all three. Check for good spark on all the cylinders? Check to see if the crank is in phase? Reeds good...no warped petals or chipped corners? Do you notice any change in idle? All 3 were 120 psi. Nothing wrong with the reeds but I am replacing them with boyesens. Stator is brand new quality rebuild I had bright blue spark on all three not sure what they were when it started bogging and dying I think Ben is right I believe the mag side cylinder head an antifreeze leak in it and washed that piston down. The PTO side was lean. Quote Link to comment Share on other sites More sharing options...
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