hi guys, I have a 1970 suzuki ts90, it smokes like a mofo and runs rich, i have the needle on the lowest setting, the gas is mixed at 50:1 and the oil injection is removed. could i have a bad clutch side crank seal?
ts90 smoking badly, running rich
Started by stuck_n_rut, Feb 13 2012 07:45 PM
14 replies to this topic
Posted 13 February 2012 - 07:45 PM
hi guys, I have a 1970 suzuki ts90, it smokes like a mofo and runs rich, i have the needle on the lowest setting, the gas is mixed at 50:1 and the oil injection is removed. could i have a bad clutch side crank seal?
Posted 14 February 2012 - 02:24 PM
leaking crank seals make ir run lean not rich. The oil injection is very important to remain connected as it supplies oil to the crank bearings. Do not run it on pre mix. could be low compression.
Posted 15 February 2012 - 12:15 AM
definately not low comp. thing tested at 186 psi, i need to hook the oil injector up then eh? i thought it was a bad clutch side seal because of the oil it would be sucking
Posted 15 February 2012 - 08:20 PM
I second hooking the oil injection system up. There is no reason to premix unless the oil system was giving you problems. How are the float levels? Does your carb have the stock jets in it? How does the plug look?
Posted 16 February 2012 - 07:55 AM
stuck_n_rut, on 13 February 2012 - 07:45 PM, said:
hi guys, I have a 1970 suzuki ts90, it smokes like a mofo and runs rich, i have the needle on the lowest setting, the gas is mixed at 50:1 and the oil injection is removed. could i have a bad clutch side crank seal?
Posted 16 February 2012 - 09:17 PM
oops, tore down the bowl of the carb, so much jb weld in there, f*** now i have to pay 20$ for a carb kit, oh well I got the bike for free
Posted 17 February 2012 - 07:06 AM
stuck_n_rut, on 16 February 2012 - 09:17 PM, said:
oops, tore down the bowl of the carb, so much jb weld in there, f*** now i have to pay 20$ for a carb kit, oh well I got the bike for free
Posted 17 February 2012 - 10:21 AM
stuck_n_rut, on 17 February 2012 - 09:29 AM, said:
the float is pure jb weld in here, no wonder iit ran like ass
Posted 17 February 2012 - 03:23 PM
Yeah maybe you can find a newer carb that will fit it. Unless your going for a original restore, that will be quicker and easier.
Posted 18 February 2012 - 06:44 PM
I raced MX on a 100cc gyt kitted TS back in 71-72, taking the oil pump off was a must do for rough riding back then, the oil would bounce around in the oil tank and you could see air in the oil lines. Dusty conditions could clog the vent hole on the oil cap. After blowing a couple of cranks I removed the oil pump and the oil catcher on the crank and ran premix. Never blew another crank after that. The 100cc kit came with the plate to cover the hole where the pump was if I remeber correctly......
Posted 19 February 2012 - 10:22 AM
If you keep a decent amount of oil in the tank I don't see how it's possible to get air in the lines unless your run it upside down for a few minutes. I've had 3 bikes with premix pumps and have never had problems with air in the lines or going through cranks. If it's adjusted right and primed correctly you will not have any problems, it will smoke less, and you don't have to worry about mixing gas.
