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Peder_y2k

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Everything posted by Peder_y2k

  1. Peder_y2k
    I stand corrected on the number of screws holding the jet block, just going from memory from some time ago, being 65 y.o. has a way of screwing with recall. Regarding o-ring availabilty, is there no generic bike shop in your area? I'm lucky to have such a shop nearby, and it has 3 Suzuki dragsters on the showroom floor built by the owner/mechanic, so this shop has generic parts and real knowhow. I go there for anything not proprietary and save big bucks, but I get my Rotella T3 oil at the Walyworld. -Pete, in Tacoma WA USA '83,88 Venture
  2. Peder_y2k
    The clutch slave cylinder is held in by two allen head bolts. Use a hand held impact (hammer type) tool with a tight fitting hex fitting and smack it hard the first time. These allen head bolts can be frozen in place and a poor fit allen tool will round out the bolt head allen socket and then you're screwed. The impact driver with tight fit allen tool can overcome the friction that seizes the bolt. No sloppy fit or the problems just multiply. Spend the money for the right fit tools Another possible leak source is the gear selection sending unit. The O-ring can shrink and start leaking motor oil past it. The sensor is held in with two flat head philips screws. Don't hard tighten the screws or the plastic housing of the sensor will crack. One can use brake fluid cleaner spray to blast the whole area clean, and then watch where the fluid starts to appear. -Pete, in Tacoma WA USA '83, 88 Venture
  3. Peder_y2k
    The jet block o-ring is located between the jet block (the cast piece held in place with 4 screws that contains all the jets) and the wall of the carb casting. It seals around the brass needle jet tube by compression. These o-rings can shrink over time, and cause engine vacuum to draw fuel right past it. Best to replace all 4, one in each carb. The service manual briefly mentions the o-ring, and one of the carb parts diagrams poorly shows it. When you remove the jet block, you'll see it sitting there waiting to jump out and dissapear. Not to worry, a bike shop has more. I think I paid $1.00 for all four. -Pete, in Tacoma WA USA '83,88 Venture
  4. Peder_y2k
    That's definately the problem/issue. The main jet has come loose and extra fuel is flowing past the loose jet fastener screw, the jet block o-ring, and around the outside of the jet. No wonder the bike has bad fuel economy. Still doesn't explain the oily crud on the diphragms. BTW, the o-ring is 10mm i.d x 1mm cross section and are usually found at most bike shops that have a real owner/mechanic. -Pete, in Tacoma WA USA '83,88 Venture
  5. Peder_y2k
    Poor fuel economy can be the result of low compression, bad valves, carb problems like high fuel level, worn main jet and needle, leaking jet block o-ring. Ignition system problems, worn spark plugs. Just a thought. When my fuel economy dips under 40mpg riding two up, I start looking for the reason. Re: diaphragm pinholes, the service manual states nothing about pinholes, but only mentions rips and tears as a reason to do something about. -Pete, in Tacoma WA USA '83,88 Venture
  6. Peder_y2k
    The oily sludge is from the crankcase breather system. Is yours routed the original way, or re-routed to open air like many of us have done? -Pete, in Tacoma Wa USA '83, 88 Venture
  7. Peder_y2k
    Well those mid eighties temperatures, the wind, and the adrenaline, all mix to wear one out earlier than expected. Once one gets used to longer distances, better temps, less traffic, etc. the fatigue is no longer there. My lady and I two up can go 500 miles and end the day simply being tired as usual for the time of day and be ready to do it all over again the next. BTW, when it's warm out, drink more water as dehydration tires one out quickly. -Pete, in Tacoma WA USA 83,88 Venture
  8. Peder_y2k
    If it is not a fuel delivery issue, then I would suspect the CDI unit. The CDI's have been known to quit as the result of moisture getting inside, then when they dry out enough, they can work OK, and others suffer from failed soldered connections at the circuit board. -Pete, in Tacoma WA USA '83, 88 Venture
  9. Peder_y2k
    It's the same. If one doesn't like the color, then re-paint it. -Pete, in Tacoma WA USA '83,88 Venture
  10. Peder_y2k
    With the boost sensor (vacuum/MAP sensor) disconnected, the voltage signal will not arrive at the Spark Control Unit such that proper engine ignition timing can be achieved. A slow boost sensor response due to rapid vaccum loss will result in 4 things: 1) retarded ignition timing, and 2) lean fuel mix at cyl #2. and 3) delayed or slow acceleration, and 4) susceptability to preignition (pinging) or the sound of marbles in the cranckcase, which is very bad. -Pete, in Tacoma WA USA '83,88 Venture
  11. Peder_y2k
    Thanks for the info, explanation, and images. Do you suppose the mounting location, being subject to constant engine heat, may contibute to the seal deterioration? It may be possible to relocate inside the left fairing as the lead wires seem long enough and the vacuum line is a non issue. This new location could minimize the heat exposure and resulting slow failure. -Pete, in Tacoma WA USA '83,88 Venture
  12. Peder_y2k
    Engine finally got broken in. Nothing to do with fuel pump issue. -Pete, in Tacoma WA USA '83,88 Venture
  13. Peder_y2k
    OK, so I got tired of fooling with the leaking boost sensor and ordered a replacement from an e-bay seller. I'll test it after it gets here and before I put things back together. Sure is a bother to take so much of the bike part just to get at this little MAP sensor, then put it all back together again, especially during riding weather. -Pete, in Tacoma WA USA '83, 88 Venture
  14. Peder_y2k
    Well I vacuum tested the boost sensor on my '83 and it holds a steady vacuum. The sensor on my '88VR slowly looses vacuum in 14-15 seconds, but it works. Next I'm going to plug the vent hole mentioned in one of my previous posts and see what difference it makes. -Pete, in Tacoma WA USA '83,88 Venture
  15. Peder_y2k
    So I tested the boost sensor (MAP sensor) on my '88VR with a good vacuum pump/guage and digital volt meter, and the results match the service manual specs. This is good. The transition time for the vacuum in the sensor to go down from 21in Hg. to zero is 14-15 seconds. This is such a slow draw down that I believe the vacuum loss is intentional and a way to bleed/balance the system. So I don't think the sensor is supposed to hold an absolutely stable vacuum. I'm now going to test the sensor on my '83 for comparrison. Seems they both have the same part number. -Pete, in Tacoma WA '83,88 Venture
  16. Peder_y2k
    OK, so I removed the boost sensor from my '88VR for close examination for cracks and/or leaks. Found low pressure air escaping from what appears to be a designed-in vent hole located in the lower edge/corner of the three prong electical connecter blades. No cracks or evidence of damage. -Pete, in Tacoma WA USA '83,88 Venture
  17. Peder_y2k
    How does one repair/replace/fix a ruptured cover for the noise sensing microphone on the VR radio controls? -Pete, in Tacoma WA USA '83, 88 Venture
  18. Peder_y2k
    Is the ignition system vacuum sensor on my '88 VR supposed to hold a steady vacuum? I checked all the related hoses for vacuum leaks and found none, but the sensor itself will not hold a steady vacuum as the vacuum bleeds off moderately. Is this a problem, or is this the way it was designed? -Pete, in Tacoma WA USA
  19. Peder_y2k
    What's the function of the lower cowl/scoop/chin-spoiler on the XVZ1300? Is it just for looks, or does it have a real function? -Pete, in Tacoma WA USA '83,88 Venture
  20. Peder_y2k
    So I went on a 6 mile RT with my '88 VR to gas up the bike, and when I got back, the engine was running a little rough, saw no wet spot clue under the bike, so I removed the engine side covers to tamper with the pilot screws to see what happens. On 3 carbs, turning the pilot screw in all the way caused the engine to slow to almost stop, but the 4th made no difference. That meant the one carb was getting fuel from somehwere else. So I shut off the engine and heard a soft Darth Vader type labored breathing sound. Sound did not quit, so I removed the air filter and looking down the intake with a flashlight saw carb in question all wet, and could watch fuel spraying from the needle jet with each of the breathing sounds! What the...? Never experienced this before in 45 years wrenching. Decided to drain the fuel bowl and ran the fuel pump to pressure flush through the inlet valve, and sure enough, there was a small particle that came out. Reassembled and started the bike, sync'd the carbs and adjusted the pilots, and the bike idles fine once again. Just can't figure out what caused the pulsing breathing sounds that lasted so long, as there seems no vacuum source with the engine off. Maybe engine heat was vaporizing some fuel for the pressure cycled release and resulting fuel spraying. BTW, new fuel filter installed a week ago, so the particle likely came from the wrenching environment. I guess it pays to flush everything when fooling with the fuel system. -Pete, in Tacoma WA USA '83,88 Venture
  21. Peder_y2k
    What is the condition of the chrome side bag and engine guard items? All road rashed, bent, and/or broken? -Pete, in Tacoma WA USA '83,88 Venture
  22. Peder_y2k
    The one with fins! -Pete, in Tacoma WA USA '83,88 Venture
  23. Peder_y2k
    I second that opinion. It does sound like tire noise. -Pete, in Tacoma WA USA '83,88 Venture
  24. Peder_y2k
    What's the .357 for, putting the crippled motorcycle out of its misery? So should I shoot in the cylinder head, if so, which one? -Pete, in Tacoma WA USA '83,88 Venture
  25. Peder_y2k
    I am reviewing the list of what items are necessary to bring with the bike (1st gen Venture) and for the bike when I go on road trips, that are not already included like fuses. My list includes: Tire repair kit, plugs and patches Tire inflator pump/compressor Tire guage Universal fit tire tube, for when tire can't be plug repaired Tool Kit Extra Spark Plug 1 Qt motor oil Shop towel (rags) Spare turn and stop bulbs Extra TCI unit Rain gear, poncho Seat towel Winshield cleaning solution Water bottle Emergency food rations Flashlight Multi-purpose Leatherman tool Cell phone w/ charger Credit Card Any other suggestions? -Pete, in Tacoma WA USA '83, 88 Venture
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