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  1. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    With a new Carter fuel pump and the Holley 12-887 regulator it seems to stay running, but I am noticing that the revs hang when it’s warmed up....
    Post by: Alec Venable, Jul 23, 2024 in forum: XJ Technical Chat
  2. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    One thing that seems odd is that fuel does not seem to gravity feed to the pump at all. It will flow freely out of the tank when the inlet side of...
    Post by: Alec Venable, Jul 15, 2024 in forum: XJ Technical Chat
  3. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    I did also try that…twice actually. Bike still ran poorly. I guess I can try it again? Yeah that as well. I can feel the pump come on but it will...
    Post by: Alec Venable, Jul 15, 2024 in forum: XJ Technical Chat
  4. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Yeah I installed one, 0-15 psi. Fuel pressure dwindles over the course of the bike running for about 20 minutes, and activating the pump with the...
    Post by: Alec Venable, Jul 7, 2024 in forum: XJ Technical Chat
  5. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Update. The pump does not appear to be shutting off, as measured voltage to the pump was still 12 when the bike is running approx. 1,500 rpm. I am...
    Post by: Alec Venable, Jul 4, 2024 in forum: XJ Technical Chat
  6. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    I’ll also add, the connection to the 20amp main fuse was hot. And was even beginning to warp itself.
    Post by: Alec Venable, Jul 1, 2024 in forum: XJ Technical Chat
  7. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Update time! So I’ve installed this fuel pressure gauge, lo and behold, the fuel pump is in fact not operating when everything is hot. And to add...
    Post by: Alec Venable, Jul 1, 2024 in forum: XJ Technical Chat
  8. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Moving forward, I’m going to get the bike running again, because it will for about 20 minutes for it begins to misfire then slowly die. When this...
    Post by: Alec Venable, Jun 29, 2024 in forum: XJ Technical Chat
  9. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Yeah I apologize, I didn’t acknowledge what you said about the TCI. When I referred to the regulator it was just me assuming what could be the...
    Post by: Alec Venable, Jun 24, 2024 in forum: XJ Technical Chat
  10. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    You make a good point. I have tested the fuel flow by removing the cap to the tank and running the motor, but I have yet to try actually riding...
    Post by: Alec Venable, Jun 24, 2024 in forum: XJ Technical Chat
  11. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    I have since replaced the fuel pump and discarded the fuel filter. The bike ran fine for about 30min and then left me stranded again, just like it...
    Post by: Alec Venable, Jun 24, 2024 in forum: XJ Technical Chat
  12. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    So I've completed re-routing the fuel line from the petcock. The path it follows is satisfactory, but I'm noticing that when I open the petcock,...
    Post by: Alec Venable, Jun 18, 2024 in forum: XJ Technical Chat
  13. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    It is possible…although I have a low amp battery charger and I’ve been keeping it plugged in when parked. I did notice something interesting...
    Post by: Alec Venable, Jun 18, 2024 in forum: XJ Technical Chat
  14. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Interesting. I’ll try it. Should I be worried about debris from the fuel tank potentially entering the fuel system or engine? I’ve rinsed the tank...
    Post by: Alec Venable, Jun 17, 2024 in forum: XJ Technical Chat
  15. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Another update. I am now noticing that my fuel pump only comes on when I attempt to start the bike with the kickstand down. This was my process...
    Post by: Alec Venable, Jun 17, 2024 in forum: XJ Technical Chat
  16. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Alright. Update! First of all, thank you for the responses. Secondly, I solved the initial issue I was experiencing when I started this thread. It...
    Post by: Alec Venable, Jun 16, 2024 in forum: XJ Technical Chat
  17. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    So am I to gather that a multimeter from harbor freight will be inadequate? I can check other hardware stores. The spark plug caps were replaced...
    Post by: Alec Venable, Jun 16, 2024 in forum: XJ Technical Chat
  18. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Looks like there may be a trip to harbor freight in order to buy a multimeter... "XJ650 models: Pick-up coils: 1980-81 XJ650 Maxim and Midnight...
    Post by: Alec Venable, Jun 15, 2024 in forum: XJ Technical Chat
  19. Alec Venable
    Post

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Having done some research, as I was unfamiliar with the ignition system on this bike, I found this in the forums: "The ignition system actually...
    Post by: Alec Venable, Jun 15, 2024 in forum: XJ Technical Chat
  20. Alec Venable
    Thread

    1982 Yamaha XJ650L Turbo Seca - No start after riding and running fine.

    Hello, as the title states I have a 1982 Yamaha XJ650L Turbo Seca. I just replaced the turbo with a rebuilt one from XJ4Ever, shoutout to Len for...
    Thread by: Alec Venable, Jun 15, 2024, 30 replies, in forum: XJ Technical Chat
  21. Alec Venable
    Post

    Oil leaking into exhaust…worn turbo?

    Wanted to post an update here, with the bike fully legal I've had the chance to take it for a few rides. It runs great! I was initially...
    Post by: Alec Venable, Jun 10, 2024 in forum: XJ Technical Chat
  22. Alec Venable
    Post

    Oil leaking into exhaust…worn turbo?

    I am a little concerned it’s not developing boost yes. I won’t really know for certain until I have the opportunity to really open it wide and see...
    Post by: Alec Venable, May 27, 2024 in forum: XJ Technical Chat
  23. Alec Venable
    Post

    Oil leaking into exhaust…worn turbo?

    Update: Good news! Rebuilt turbo installed and bike is running! I may need to investigate a little smoke in the exhaust but I’ll wait and see if...
    Post by: Alec Venable, May 27, 2024 in forum: XJ Technical Chat
  24. Alec Venable
    Post

    Oil leaking into exhaust…worn turbo?

    I am currently making arrangements to replace the worn turbo unit. I am curious about the wastegate actuator. Does anybody know of a good way to...
    Post by: Alec Venable, May 13, 2024 in forum: XJ Technical Chat
  25. Alec Venable
    Post

    Oil leaking into exhaust…worn turbo?

    It was one time, yes. I was told after that one ride is when it started leaking oil bad. Before that ride, the previous owner had a long list of...
    Post by: Alec Venable, May 7, 2024 in forum: XJ Technical Chat
  26. Alec Venable
    Post

    Oil leaking into exhaust…worn turbo?

    Upon further inspection after turbo removal, it would seem the turbine and compressor wheels are both in tact, and do rotate. All the chunks of...
    Post by: Alec Venable, May 7, 2024 in forum: XJ Technical Chat
  27. Alec Venable
    Post

    Oil leaking into exhaust…worn turbo?

    Thank you for the suggestion! I will do that. It has 21,090 miles. I’m in the process of removing this turbo, and I removed the exhaust pipe on...
    Post by: Alec Venable, May 7, 2024 in forum: XJ Technical Chat
  28. Alec Venable
    Post

    Oil leaking into exhaust…worn turbo?

    I have a lot of the plastics off as well as the exhaust removed, all the way up to the turbo. For the age I’d say the bike is in decent shape. Not...
    Post by: Alec Venable, May 7, 2024 in forum: XJ Technical Chat
  29. Alec Venable
    Thread

    Oil leaking into exhaust…worn turbo?

    Hello, I just acquired a 1982 Yamaha XJ650LJ Turbo SECA. It did sit for quite a long time, more than 2 decades in a garage under a tarp. Well...
    Thread by: Alec Venable, May 7, 2024, 13 replies, in forum: XJ Technical Chat
Showing results 1 to 29 of 29
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