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Rear cylinder not firing

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Old 04-06-2007 | 07:52 PM
  #91  
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Josh,

I don't think you'll find anything like that at an auto parts store. If you're lucky a motorcycle parts counter might have one, but more than likely you'll be ordering it online or by phone.

Something I've just thought about: Since you were running so rich you will want to be careful about oil changes and maintenance until you are sure she is running well. Running that rich will put some nasty stuff into the oil that will rapidly break it down and cause bad things to happen. I HIGHLY recommend you change the oil at the earliest opportunity. The other concern is that running extremely rich washes the oil film off the cylinder walls. This can cause excessive ring/cylinder wear and reduce the life of the motor. If it ran as rich as you say for anything more than a 1000 miles or so it might be wise to do a compression and leakdown check. All this is precautionary of course and is not meant in any way to scare you into thinking the motor is now "bad".
Old 04-07-2007 | 12:28 PM
  #92  
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Final update!:
Samantha is her old self again. I rode for about 35 miles yesterday and she is just perfect once again!!! OH MY GOD, i had so much fun! It was great! Thank you everyone who helped out with this! I am so grateful. What a fun journey

There was only 2 things that happened, 2x the front cylinder jumped, it just missed, but in about an hour of riding, it only happened 2x, so i don't think i am worried. I restarted her about 8x yesterday and each time she started up immediately. I am going to find out how good the gas mileage is today. It is funny, the silly guy at the Honda shop told me it was normal to get below 25 mpg with a 2bros exhaust on. Oh, and the noise that i tried to show you guys on the video never came back after that one time. So i am not worrying about it. I am so happy! Now i get to focus on my Supras now that my cycle is running perfectly again. I am also going to order a new set of plugs just because i have messed with the current ones soooo many times! I have used a wire brush on them so many times i cant remember. so it will make sense to get another set, even though this set only has like 800 miles on them. at least we drive 2 twins, 4 iridium plugs would be spendy
Originally Posted by Hawkrider
Josh,

I don't think you'll find anything like that at an auto parts store. If you're lucky a motorcycle parts counter might have one, but more than likely you'll be ordering it online or by phone.

Something I've just thought about: Since you were running so rich you will want to be careful about oil changes and maintenance until you are sure she is running well. Running that rich will put some nasty stuff into the oil that will rapidly break it down and cause bad things to happen. I HIGHLY recommend you change the oil at the earliest opportunity. The other concern is that running extremely rich washes the oil film off the cylinder walls. This can cause excessive ring/cylinder wear and reduce the life of the motor. If it ran as rich as you say for anything more than a 1000 miles or so it might be wise to do a compression and leakdown check. All this is precautionary of course and is not meant in any way to scare you into thinking the motor is now "bad".
I will change the oil when i have a chance, i will drop by honda to get some, i think it is about time anyways, i have about 1200 miles on the oil and i just went through winter, so good timing. i have a compression gauge set, but leakdown, is that different? what are the stock compression numbers? Thanks again!
Old 04-07-2007 | 12:56 PM
  #93  
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Originally Posted by viperkillertt
the silly guy at the Honda shop told me it was normal to get below 25 mpg with a 2bros exhaust on.
Sounds silly but it's a side effect of lower exhaust backpressure, during the overlap both valves are open, while the exhaust rushes out the cylinder, the momentum create a vacuum that draws the fresh charge trough the combustion chamber, it's the only way to fill this unswept aera, the cams are designed for a stock backpressure and may overdo the overlap if backpressure is lowered. So fresh usable fuel go right trough the combustion chamber without doing work. This is also why it pops when some flame from the exhaust initial blow (exh valve crack open) reach the somehow still charged mixture inside the pipe. (pair and over rich mix also but i't another story)
The stock tune is emission freindly, the overlap stops(ex valve closes) before unburnt hydrocarbons get out to keep emission down, doing so keeps some burnt gases in the chamber. Decreasing the backpressure have a twofold advantage that bumps the horsepower, more scavenging of the burnt gases (all crap out and all fresh charge) and less remaining pressure hindering at the piston top, even a slight vacuum at some point. All that at the expense of fuel consumption and emissions.
Hope I haven't confused anyone lol
Old 04-07-2007 | 01:54 PM
  #94  
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YOU GUYS ROCK!!! I just did the final test, MPG!!! OH MAN, i am sooo happy, 31!!!! I rode around town all day, so all below 40mph, and i just fueled up. It was so weird, because normally i should be down more then 2 gallons and i opened up the tank and there was fuel still at the top. I was like, YES!!! She took just over a gallon of gas. Man, you guys rock, i am so not going to worry about driving her anymore. If i want to ride, i will just do it! :P My supra gets about 16, so bike 2x, meaning i can ride 2x as much! Thanks so much guys! You rule!

I am looking forward to seeing how good it is over a whole tank, i need to remember to reconnect my red light of death I forgot when i was reconnecting everything I think highway might be upto like 36-40. She is running so well, and yes she has even more power now. I am shocked. I still never take her above like 5k, i cant imagine how to handle her with her whole 110 hp hehe, thanks guys!
Old 04-07-2007 | 02:04 PM
  #95  
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And you did all the work yourself, congrats. You saved money and learned how to deal with carbs, bot bad at all !!
On a side note I do 36 MPG with a single D&D pipe I had lost prolly 2 MPG from stock exhaust quite far from the 25 MPG quoted. I still have to measure with the DJ jetting.
Old 04-07-2007 | 02:38 PM
  #96  
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Originally Posted by viperkillertt
YOU GUYS ROCK!!! I just did the final test, MPG!!! OH MAN, i am sooo happy, 31!!!! I rode around town all day, so all below 40mph, and i just fueled up. It was so weird, because normally i should be down more then 2 gallons and i opened up the tank and there was fuel still at the top. I was like, YES!!! She took just over a gallon of gas. Man, you guys rock, i am so not going to worry about driving her anymore. If i want to ride, i will just do it! :P My supra gets about 16, so bike 2x, meaning i can ride 2x as much! Thanks so much guys! You rule!

I am looking forward to seeing how good it is over a whole tank, i need to remember to reconnect my red light of death I forgot when i was reconnecting everything I think highway might be upto like 36-40. She is running so well, and yes she has even more power now. I am shocked. I still never take her above like 5k, i cant imagine how to handle her with her whole 110 hp hehe, thanks guys!
That is great to hear josh and sounds like you are really enjoying it. Nice job. Be careful.

bill
Old 04-07-2007 | 06:35 PM
  #97  
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Josh, good to hear everything worked out. All that time on the phone really paid off. Now, about that top end tuning....

Try this just once and you'll be hooked: 2500 rpm in second gear, ready to get on the highway, just whack it open and hold on. You'll get to 70mph or so but it's exhilarating. After a lot of practice and maybe a track day or three you can learn to do that whilst leaned over with a knee on the ground. That there my friend is better than sex.
Old 04-07-2007 | 10:03 PM
  #98  
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Originally Posted by Hawkrider
Josh, good to hear everything worked out. All that time on the phone really paid off. Now, about that top end tuning....

Try this just once and you'll be hooked: 2500 rpm in second gear, ready to get on the highway, just whack it open and hold on. You'll get to 70mph or so but it's exhilarating. After a lot of practice and maybe a track day or three you can learn to do that whilst leaned over with a knee on the ground. That there my friend is better than sex.
Hehehe Thanks for the advice I know someday i will do it I get to 45 in no time, that is usually where i let her off, but i never pull the throttle that hard, just hard enough
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