Search results

  1. K

    Combustion Problem?

    Hold your hand over the carb opening when trying to start. THAT would mimic an 'old school' choke and you might start just fine. With the ABS, all it does is richen the mixture for those first few minutes but doesn't block any air like the old chokes used to do. The passage in the bottom...
  2. K

    Combustion Problem?

    Spray some starting fluid or carb cleaner into the carb when you're trying to start. If it starts and tries to run - even a little bit - then you know you have carb or fuel issues and not ignition, compression or really anything else. In the bottom of the fuel bowl there are some tiny...
  3. K

    15hp Tohatsu - issues to look for

    Depends on how old and rough the Avon is. I bought my 9.9 for $800 and ended up selling it (because I didn't end up using it as I thought I was going to) for $1300. I did upgrade the carb to an 15HP though for (I think) $125. Was a nice motor and I probably only used it a dozen times or...
  4. K

    15hp Tohatsu - issues to look for

    Looks identical to the Nissan 9.9 that I had (which was early 00's). I'd grab it if it's a decent price and not a disaster inside the cowling.
  5. K

    Auto by start resistance

    I just checked the one I have here... 19.8 Ohms at room temp. You can apply voltage and see if it retracts appropriately. btw... have you checked your PMs?
  6. K

    Won’t pee

    If it was run for any length of time (SECONDS!!) without water, then damage to the impeller would happen. Clean all the old rubber out of there, make sure there are no scratches in the pump housing where the impeller contacts it and put in a new impeller. Did the impeller have a key or pin...
  7. K

    Won’t pee

    Did you disassemble the water pump to check the impeller again? I once had a 6HP with similar symptoms, shortly after I had put in a brand new impeller. When I took the water pump apart, there were a lot of calcium-like deposits stuck to the inside of the water pump. They were not there...
  8. K

    1984 honda b100

    Some pics might help. It just doesn't make any sense. The engine draws air through the carb and the choke plate physically blocks off the input, so it HAS to have an effect on the engine. You're missing something pretty obvious here. When the choke is closed, there is increased air...
  9. K

    NSF 15C No Spark.

    The two spark plug wires coming out of it are the secondary. When high voltage is there, BOTH spark plugs have to fire at the same time. If there is an issue with just one spark plug, then it very well could affect the other. You want to make sure there is some resistance from one spark...
  10. K

    NSF 15C No Spark.

    I don't know the failure stats on pulsar coils, but I suspect they are very low. Unless it has physical damage or shows a short or open on the windings, I'd bet it's AOK. Why do you think the ignition coil is OK? Have you made primary and secondary tests on that? I believe the neutral...
  11. K

    NSF 15C No Spark.

    194 to 202 Ohms sounds in the ballpark. Your meter might be thinking "continuity" is a dead short (like you're tracing a wire). If your meter can read peak voltage, then see when you get from the pulsar when you're spinning the engine. You're getting no spark, right? Did you actually...
  12. K

    Nissan 15 NSF15B2 long warmup times

    YOU are not going to notice a difference in the running of an engine at 120F or 180F. You might be able to measure it in fuel consumption, emissions, or power available, but you're not going to notice it by the "seat of your pants". If the problem happens at WOT after a short bit, then it's a...
  13. K

    Slow Jet (aka Pilot Jet) on a MFS6B Carbeurator

    Just my personal opinion, but if you're going to all that work, then drill out the cap over the idle mixture screw and pull that out too before you soak. (just make sure to record the number of turns before you remove it)
  14. K

    2007 Honda 20HP 4 stroke outboard fuel problem

    So it does not sound like it's a problem getting fuel TO the carburetor, but getting that fuel from the carburetor bowl into the engine. The carb bowl should have enough fuel to run the engine for a couple seconds. The first thing I'd do is check the float level to make sure that's...
  15. K

    2007 Honda 20HP 4 stroke outboard fuel problem

    Does it bog down as soon as you hit the throttle or is there a slight delay then it bogs down, or bogs down after you're at throttle for a bit? Sure you're not sucking in any air between the tank and the engine?
  16. K

    8hp starts but runs only at high rpms

    Well, I guess I'll be the one to call BS on this adventure. Low compression would not cause an engine to run OK at 4000, but not at 3000 or 2000. I could understand if the problems were only at VERY low RPMs, such as the 2-stoke idle problems noted by one poster, but that's just not the case...
  17. K

    8hp starts but runs only at high rpms

    In the carb, there are two main circuits for the fuel flow. The high speed circuit, which is really just the main jet that feeds directly out of the float bowl and the "everything else" circuit which feeds the idle and off-idle circuits. You can easily clean the high speed main jet by...
  18. K

    No rpm but idle

    On two cylinder motors you have to be careful when troubleshooting by disconnecting spark plug wires. If it's a siamese coil, then both plugs fire at the same time and if you disconnect just one end and do not ground it you may cause a problem in the coil, as all that voltage needs to find a...
  19. K

    8hp starts but runs only at high rpms

    Think about this.. for about 50 years motors were built with low compression (due to fuel limitations) and ran just fine below 4000 RPM. You might have (slightly) worn rings, but they are not your problem. On their smaller engines of the same vintage, the service limit for compression is 113...
  20. K

    2004 Tohatsu 6 hp 4 stroke,Can't get lower unit back on...

    I had the same motor and the thing that would always get me was the shift shaft. It hits to the inside of the housing about the same time the driveshaft should be lining up, so you hear the metallic 'ting' like the driveshaft is hitting and you mess around with that but that's not it at all...
Top