M119 does not work properly if the car sits outside for one day or more

[locoroco]

Hi! So, I have a problem that was here already, but the solution of it didn’t help me. So, basically if the car sits for one day or more it will not work properly after ~20 minutes of driving (sometimes right after the start). So, it has unstable rpms, sometimes it “shoots” from the exhaust and the car turns off when you put in drive and works very unstable in neutral. Also, the car itself vibrates pretty much. But when you drive it on a daily basis everything is fine. I read about distributor caps and I have checked mines as well. One of the two caps had super tiny amount of humidity and after I cleaned it and put it back together, nothing changed. So, this is not a solution for me. If someone knows any other solutions, I would be super grateful to hear them!
It is a 1992 m119

 

[gsxr]

Is this a 1992 M119 with LH-SFI electronic injection? If so, what you describe is an issue with the secondary ignition system. All those components need to be inspected. Cleaning the caps may not be adequate. How old are the caps, what brand, etc? Have you removed the caps, rotors, rotor bracket, and insulator to check for any oil leak behind those components? That's where to start.

BTW, welcome to the forum!

 

[locoroco]

Yeah, you’re right!
So, I bought the car not so long ago, so I don’t know precisely when something was changed. Also, I haven’t removed any further details except the distributor caps, since I was doing it right in front of my house. I will need to go the garage to remove rotors, etc. Thanks for your advice! I really appreciate it.