Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
croixflats

No spark on one cylinder

11 posts in this topic

Help needed.

Yamaha ProV 150

Last couple of times out going across the river at top speed the motor would lose power from 55mph to 45 mph and would be sluggish out of the whole. This would happen spur addict, now I have lost power permanently.

Put 2 new fuel pumps in and full set of new spark plugs in. Today I checked spark plugs and all plugs were chocolate brown except for 1 witch were clean like new. So now I assume that one of the CDI boxes(I assume these are individual coils for each cylinder) went bad. Anybody know how to test these. Or could there be something else wrong.

Any help would be greatly appreciated

Share this post


Link to post
Share on other sites

If you have individual coils, switch one over with the "bad" one. If it fires and the other not it is the coil.

Share this post


Link to post
Share on other sites

Thanks Valv and boatfixer this helps a whole lot! I realy do appreciate the help.

When I lost power I thought I might have melted a piston, been there done that. Never thought I would be happy with an electrical problem.

Now that is darker out, so I can see spark better, I'm going out now to try the sugestions.

Share this post


Link to post
Share on other sites

Baffeling, checked the spark and all seems fine. I'll puts with it tomarrow. Ive got to go pick up a new ohm meter and a compresion tester. Maybe the bad coil decided to work again being it seemed to be intermitant. I see no other explanation behind a clean spark plug.

Share this post


Link to post
Share on other sites

Thanks sparcebag good thing to keep in mind. I guess I'll put the muffs on and warm it up to see if I can get it to fail or put it in the water. Dealers are closed till Monday so I'll have to wait to go fishing. I hope I dont get sucked into watching the vikes being I'm not on the water.

Share this post


Link to post
Share on other sites

Do a compression test before you take it to the dealer....

Share this post


Link to post
Share on other sites

Compression test came up strong, same in all cylinders grin

After reading the trouble shooting manual boatfixer emailed me it looks as though 1 of 3 things. Stator,switch box or coil.

I havn't got access to a good dva meter and that I couldn't tell the difference between a stator and a switch box let alone locate them so I'm going to bring it to the guy who rebuilt the engine a few years back he does great work and is affiliated to a local marine dearlership and shop.

Share this post


Link to post
Share on other sites

It more than likely is not the stator, that is common to all cylinders. CD module, coil, coil wire, plug wire can affect 1 cylinder at a time.

Share this post


Link to post
Share on other sites

Yea, that makes sence. I only hope its not the CDI box and its something small like a wire or a coil. If its the CDI box it will have to wait till next year because the rest of my big purchases are going to hard water this year.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • We are on Lake Edward at WildWoods RV resort just north of Merrifield, MN. It is nice just driving up, unlocking it, playing for the weekend and locker her back up and leaving the frig on.  They let Atheists and Jesus freaks all in!
    •   My wife and I are starting to think about parking ours someplace. I'm tired of trying to get reservations and having to hook and unhook and all that goes with a weekend of camping. Plus I would like to have the toys available like 4-wheeler and boat.   We are looking at places up north. We know several people and like the Emily-Outing-Remer-Hill City area. I think you a further west, right? Brainerd area maybe?  
    •   5 years at one campground until they went private and wanted 60-70g's per lot with one-just-like-silly-me-o-en fees which were about what we were paying yearly already on top of that!  12 years where we are now with way bigger lots.
    •   Too bad the previous owner didn't know what they were doing. Never, ever use silicone on a rubber camper roof. I learned that the hard way many years ago.....   At least you have a good reason to have to go to the camper this weekend    How long have you been doing the seasonal thing?
    • Thanks for the reply, sounds about like what I expected and I really like the square tubing on the otters compared to clams round cheaper setup. Anyone seen any changes to the new otter lineup for this year? 
    • Last weekend spent some time re-sealing a small seam leak on a trim edge. Found out the owner before us had a leak on the same trim edge spot and left out a screw!! Also washed down the canopy and the ever reoccurring black streaks around the roof edge.   This weekend may go back and clean out and reseal a few other areas the passed own made a mess of sealing with sillycone! Using Butyl rubber this time as silicone can be pulled right off after a few years.
    • Lots of talk on sports radio and social media lately on whether the Wolves should workout a deal that sends Wiggins to Cleveland for Kyrie. Of course there would likely be some other bit players involved to make contracts work, but for all intents and purposes it's Wiggins for Kyrie.   As a fan, would you do it, yes or no?   I'm personally leaning toward "no." Kyrie is very good and still young. But he doesn't seem to offer much beyond scoring - not a prolific assist guy and his defense has never stood out. Perhaps most importantly, if reports are true and one of the main reasons he wants to leave Cleveland is so he can be the primary star on his own team - that makes me question what type of leader, team player, and locker room presence he would be. Say what you want about Lebron, but on the court he seems like an ideal teammate, almost too willing to make the extra pass. And Cleveland still has one of the best routes back to the Finals, why would you want to get away from that?
      Wiggins certainly has his faults, but he is a dynamite scorer. His defensive is poor, but at least the tools are there to be a good defender. If we lose him we also have a pretty big hole to fill on our roster. Whereas right now we have what appears to be a solid PG in Teague.    I wouldn't hate it if we landed Kyrie, but with our current situation I prefer Wiggins. All in all though, it's certainly fun to finally be in a situation where stars want to play here, not avoid Minny at all costs.
    • For many years my dad, uncles, etc have been heading to the Leech Lake area every spring and fall to fish for walleyes. There are usually 8-10 guys that go. Many of them are from the Barron, Wisconsin area. Since I've never really fished in Wisconsin, thought it might be fun to head to there one of these trips. Have always heard the Hayward area is pristine. Does anyone have a favorite lake, or possibly a favorite resort in the area I should add to the list when doing some research?  Walleyes are the only thing these guys are after.   I know there is a Wisconsin form, but it seems kind of quiet over there, so I'm hoping to get some opinions here.    
    • Well except for the owner. He's kinda ancient!!   We did the same thing with the frig to Dave on the first camper we had.
  • Our Sponsors