Deep Water no Revs
#1
04-19-2011, 07:48 PM
Deep Water no Revs
Hello All
Muddy spring, lots of fun! Bogging down, motor won't pull in deep water, etc. There are several threads on this, I didn't see any fixes, 400's thru 800's Sportsmans. Most claim not to have this problem. Here's it is, I'm in a pretty deep watery mud hole, nealing on the seat, the front is foating up/water wheelie, this is fun! Then the engine starts to loose rpm, OH S#$T we're swamped, then it will rev up some and bogg down again until the exhaust is clear from the slop. It's never stalled but this is when you need the blessed mother of wheel speed! No water in the air box, vents are up where they should be. It performs fine any other time, another cylinder more CC's would be better but it goes ok for a 500 with 27" tires. I've been in auto repair for a LONG time, do a lot of driveability diagnosis, it seems like a restricted exhaust system or fuel flow issue, not electrical. I swapped the SuperTrapp back to the OE silencer/muffler, no differance. BTY, I felt no power loss, it's quieter and the mid and top end seem slighty better. None of the Kawasakis or Hondas I ride with do this.
2002 Sportsman 500
Muddy spring, lots of fun! Bogging down, motor won't pull in deep water, etc. There are several threads on this, I didn't see any fixes, 400's thru 800's Sportsmans. Most claim not to have this problem. Here's it is, I'm in a pretty deep watery mud hole, nealing on the seat, the front is foating up/water wheelie, this is fun! Then the engine starts to loose rpm, OH S#$T we're swamped, then it will rev up some and bogg down again until the exhaust is clear from the slop. It's never stalled but this is when you need the blessed mother of wheel speed! No water in the air box, vents are up where they should be. It performs fine any other time, another cylinder more CC's would be better but it goes ok for a 500 with 27" tires. I've been in auto repair for a LONG time, do a lot of driveability diagnosis, it seems like a restricted exhaust system or fuel flow issue, not electrical. I swapped the SuperTrapp back to the OE silencer/muffler, no differance. BTY, I felt no power loss, it's quieter and the mid and top end seem slighty better. None of the Kawasakis or Hondas I ride with do this.
2002 Sportsman 500
#2
04-20-2011, 02:39 AM
#3
04-20-2011, 07:22 AM
That is an interesting idea! That is a great thought. It is definitly leaning out. Not really sure how much it settled down or the angle it was at. It's climbed so pretty steep hills without any problem. I will check that out. Thank You.
#5
04-21-2011, 03:53 PM
To be honest, I don't know where the cdi box is located? Never looked for it. I doubt this is an electrical issue, as soon as I gimp it to shallower muddy water the problem is gone. Wet electronics usually take awhile to dry out. There is no backfiring or miss firing. The more throttle you give it the more it lays down. Thanks for taking the time.
Last nite I went back on my property, the deepest place is up to the bottom of the muffler. So the little tail pipe deal was a couple inches under, no problem with that, it will even idle. Thinking about Stendori's idea, next time we play in this particular hole, I'm going to crank the Dial-a-jet full rich and then lean. See what happens, if I have time I'll check the float level before.
My buddies 650 Brute Force just tears through this hole! It pisses me off!
Last nite I went back on my property, the deepest place is up to the bottom of the muffler. So the little tail pipe deal was a couple inches under, no problem with that, it will even idle. Thinking about Stendori's idea, next time we play in this particular hole, I'm going to crank the Dial-a-jet full rich and then lean. See what happens, if I have time I'll check the float level before.
My buddies 650 Brute Force just tears through this hole! It pisses me off!
#6
04-21-2011, 04:17 PM
Polaris ATV Expert
Retired and loving it!
Retired and loving it!
To be honest, I don't know where the cdi box is located? Never looked for it. I doubt this is an electrical issue, as soon as I gimp it to shallower muddy water the problem is gone. Wet electronics usually take awhile to dry out. There is no backfiring or miss firing. The more throttle you give it the more it lays down. Thanks for taking the time.
Last nite I went back on my property, the deepest place is up to the bottom of the muffler. So the little tail pipe deal was a couple inches under, no problem with that, it will even idle. Thinking about Stendori's idea, next time we play in this particular hole, I'm going to crank the Dial-a-jet full rich and then lean. See what happens, if I have time I'll check the float level before.
My buddies 650 Brute Force just tears through this hole! It pisses me off!
Last nite I went back on my property, the deepest place is up to the bottom of the muffler. So the little tail pipe deal was a couple inches under, no problem with that, it will even idle. Thinking about Stendori's idea, next time we play in this particular hole, I'm going to crank the Dial-a-jet full rich and then lean. See what happens, if I have time I'll check the float level before.
My buddies 650 Brute Force just tears through this hole! It pisses me off!
#7
04-25-2011, 05:44 PM
Dial-a jet still offered huh? I had one on my 1977 Yamaha RD 400 years ago! Never could get it set right for all conditions,but could have been just the 2-stroke! I don't normally chime in on these type posts(NOT my area) but couldn't resist on the Dial-a jet. Turn it up and see if helps. OPT
No replacement for displacement.
Thought you might get a chuckle!
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#8
04-25-2011, 08:10 PM
Polaris ATV Expert
Retired and loving it!
Retired and loving it!
I just checked Dial-a-jet is still available. Had no problems with it in the 5+ years it's been on my atv. On the other hand, I can't say "Holy s%#T that dial-a-jet made a huge differance." Several times I've taken the air box stuff off, opened the throttle, blew in gently with the air gun to see if it really did anything. Never any indications of overly rich conditions, plug looked good, exhaust pipe never black, no black smoke. Who knows, maybe there's not enough air flow to pull any fuel?? I think the biggest seat of the pants change was, take off the SuperTrapp off and put the OE muffler back on!
No replacement for displacement.
Thought you might get a chuckle!
No replacement for displacement.
Thought you might get a chuckle!
#9
04-25-2011, 08:17 PM
YEA,I chuckled a little bit,THEN wanted to cry! Wanted the RD400 back,without the Dial-a-jet! Along with my 68 RS/SS Camaro that I bought new off the show room floor when I was 19, Plus when I got tired of it,got a 71 Plymouth GTX Plum Crazy,440 white top and white bucket seats! kept about 2 years! My son still doesn't forgive me,BUT back then they were JUST CARS and gas was about 30-32 cents a gallon! OPT
#10
05-01-2011, 02:01 PM
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Hello All
Muddy spring, lots of fun! Bogging down, motor won't pull in deep water, etc. There are several threads on this, I didn't see any fixes, 400's thru 800's Sportsmans. Most claim not to have this problem. Here's it is, I'm in a pretty deep watery mud hole, nealing on the seat, the front is foating up/water wheelie, this is fun! Then the engine starts to loose rpm, OH S#$T we're swamped, then it will rev up some and bogg down again until the exhaust is clear from the slop. It's never stalled but this is when you need the blessed mother of wheel speed! No water in the air box, vents are up where they should be. It performs fine any other time, another cylinder more CC's would be better but it goes ok for a 500 with 27" tires. I've been in auto repair for a LONG time, do a lot of driveability diagnosis, it seems like a restricted exhaust system or fuel flow issue, not electrical. I swapped the SuperTrapp back to the OE silencer/muffler, no differance. BTY, I felt no power loss, it's quieter and the mid and top end seem slighty better. None of the Kawasakis or Hondas I ride with do this.
2002 Sportsman 500
Muddy spring, lots of fun! Bogging down, motor won't pull in deep water, etc. There are several threads on this, I didn't see any fixes, 400's thru 800's Sportsmans. Most claim not to have this problem. Here's it is, I'm in a pretty deep watery mud hole, nealing on the seat, the front is foating up/water wheelie, this is fun! Then the engine starts to loose rpm, OH S#$T we're swamped, then it will rev up some and bogg down again until the exhaust is clear from the slop. It's never stalled but this is when you need the blessed mother of wheel speed! No water in the air box, vents are up where they should be. It performs fine any other time, another cylinder more CC's would be better but it goes ok for a 500 with 27" tires. I've been in auto repair for a LONG time, do a lot of driveability diagnosis, it seems like a restricted exhaust system or fuel flow issue, not electrical. I swapped the SuperTrapp back to the OE silencer/muffler, no differance. BTY, I felt no power loss, it's quieter and the mid and top end seem slighty better. None of the Kawasakis or Hondas I ride with do this.
2002 Sportsman 500