ftball86 Posted February 22, 2014 Author Report Posted February 22, 2014 Here are the plugs, left one is darker than right one I mixed 91 octane in 5 gal can and used a measuring cup I bought at the dealer for the yamalube. Sent from my iPhone using Tapatalk Quote
uman1030 Posted February 22, 2014 Report Posted February 22, 2014 They look awful sir especially the left one. clean those up or buy new ones. check your air filter make sure it isn't clogged. If its clean then you may have to look into jetting/recleaning carbs Quote
01BANSH Posted February 22, 2014 Report Posted February 22, 2014 if youre cheap or cant get to the parts store take a small propane torch to those plugs and burn all the crap off and get em nice and hot and put them pack in. should start just fine! Quote
ftball86 Posted February 22, 2014 Author Report Posted February 22, 2014 And I get a blue spark from both Sent from my iPhone using Tapatalk Quote
ftball86 Posted February 22, 2014 Author Report Posted February 22, 2014 Going to store to get new ones, I'll keep you guys posted, thanks for the help Sent from my iPhone using Tapatalk Quote
uman1030 Posted February 22, 2014 Report Posted February 22, 2014 Odd, if they are showing a bright blue spark and your definately getting fuel it should start. Did you ever verify the plugs were wet after trying to start it? if this is all true then it may be a compression issue. seems unlikely if it started right up after Carb cleaning but it is a possibility Quote
ftball86 Posted February 22, 2014 Author Report Posted February 22, 2014 Carbs were wet, I don't own a compression test set Sent from my iPhone using Tapatalk Quote
uman1030 Posted February 22, 2014 Report Posted February 22, 2014 how about the plugs? were the plugs wet after kick starting attempts to show its getting fuel into the combustion chamber Quote
ftball86 Posted February 22, 2014 Author Report Posted February 22, 2014 Sorry meant to say plugs Sent from my iPhone using Tapatalk Quote
uman1030 Posted February 22, 2014 Report Posted February 22, 2014 Well sadly if new plugs dont help Im going to say it needs a compression test to verify the last component of a running engine. Fuel, Spark, Compression Quote
red94yj Posted February 22, 2014 Report Posted February 22, 2014 (edited) You can rent a compression tester at most auto parts stores. Heck back In, near the front door, and just tell them your doing the test in the parking lot and you may not have to actually rent it. But you do need to do a compression test asap. Edited February 22, 2014 by red94yj Quote
ftball86 Posted February 22, 2014 Author Report Posted February 22, 2014 Plugs worked, O'Reilly's rents compression test sets so I did that just to check (140 per side). Thanks for all the help Sent from my iPhone using Tapatalk Quote
red94yj Posted February 22, 2014 Report Posted February 22, 2014 Great! Glad it worked out for you. Now you have some tuning to do. Oh and since your running at 140psi make sure your running mid grade or premium gasoline. Here's some great info that another forum member found: http://klemmvintage.com/mikuni-tuning.htm Quote
uman1030 Posted February 22, 2014 Report Posted February 22, 2014 Plugs worked, O'Reilly's rents compression test sets so I did that just to check (140 per side). Thanks for all the help Sent from my iPhone using Tapatalk awsome, Keep up on routine air cleaner maintenance and maybe when you have a chance verify what jets you have so you can avoid future plug fouling. Also with that compression make sure your always running good premium gas. Quote
ftball86 Posted February 22, 2014 Author Report Posted February 22, 2014 Is 140 a good number? Sent from my iPhone using Tapatalk Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.