Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. Good luck and have a nice day.
Casey... if you have turned your adjustment screw that much...there is no way you should have ever turned it that much...If it were me.. I would take it to a Suzuki professional and let them replace the fluid and set the adj. screws back to stock,,,you have to be a good rider to really notice a lot of difference.. and have a good sticky front tire!! Stop fooling with it!!
Fuel filter dirty? This could be a problem the '85 LTD and the '86 SEI. The fuel filter for those machines are different than the rest. They are for the pressurized fuel system and are a bit expensive. Don't know if mother Honda still has them.
Hi, William and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition and leaking check for spark leakage in the dark.
3. Spark plug gap too close or too wide.
4. Faulty ignition coil, module, and or sensor.
5. Battery nearly discharged.
6. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
7. Intermittent short circuit due to damaged wire insulation.
8. Dirty air filter
9. Intake air leak.
10. Water, dirt, or rust in the fuel system, fuel pump and/or filter.
11. Old dead or bad fuel.
12. A faulty fuel pressure regulator
13. Pinholes in the in-tank plastic convoluted tubing from the pressure regulator to the quick disconnect check valve.
14. Fuel tank vent system plugged.
15. The throttle body controls misadjusted.
16. Damaged throttle body or intake seals.
17. Clogged or faulty fuel injectors.
18. Loose, dirty, or corroded ignition module connector at crankcase.
19. Faulty TPS, MAP, CKP, O2, and/or CMP sensors.
20. Incorrect valve timing.
21. Weak or broken valve springs.
22. Damaged intake or exhaust valve.
23. The control module may be in limp mode.
24. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day. https://www.volusiariders.com/60-help/275682-05-c50-running-only-rear-cylinder.html https://www.youtube.com/watch?v=RvpOq52ud1I https://www.manualslib.com/manual/1000591/Suzuki-Vl1500.html https://www.partsfish.com/page/oem-parts-for-suzuki http://mybikemanuals.com/suzuki/