carburetor

  1. M

    Help choosing the right aftermarked carb for SeaDoo SPI 587 single carb Rotax motor

    Hi Everyone I am the happy owner of an old SeaDoo SPI which I am renovating here in Denmark. There are not many of them here in our country. It is a SeaDoo SPI with Rotax 587 single carb engine. It was equipped with a mikuni 34mm (round type, which I have renovated), but it has broken in the...
  2. P

    Carb adjustment

    I have the old school bn38 round body carburetor. My problem is the seadoo will run fine with slight throttle and full throttle but at idle it dies out. The carb has been cleaned and rebuilt, the fuel pump is supplying just fine. Wondering if an adjustment is all I need. Does that one needle and...
  3. val-e-vue

    Mikuni BN46I Injector Test

    I have a pair of 99 GTX Limited skis with the 951 engine. I'm in the middle of rebuilding them since both had blown engines. In the process of rebuilding carburetors I've found an anomaly with the injectors. The shop manual provides a test for the injectors, that involves connecting a pump to...
  4. Sebastian Bluecrew

    Carb tuning issues with a 720

    Current build...... 1995 XP 720, Bored 1.5mm, Pro-X pistons, Factory Performance Pipe without ECWI, dual 40mm carbs 140/75 jets, 40-ish pop-off, stock airbox. Motor is complete rebuilt all new gaskets and orings. Compression 150psi both cylinders. Rotary valve timed exact. Skip the grey fuel...
  5. MATT467

    RESTO I want to convert my 1996 seadoo gti to fuel injection

    I have a 1996 seadoo GTI (has dual carbs) that is having fuel problems. I have rebuilt the carbs and replaced the fuel lines, I also bypassed the fuel selector. I plan on converting it to a fuel injected system. Has anyone done this before or know of a kit
  6. T

    New Member saying Howdy

    Just wanted to say Hi. Just purchased a couple 1999 Seadoo GTS PWCs that are in pretty good shape except I cannot get one to run and the one that does run did not have a working fuel gauge. Thanks to this forum and Youtube I was able to fix the fuel gauge and I believe I have a good idea on...
  7. dugedug4

    1997 XP Carb Issues/Rebuild

    Just picked up a 1997 XP last week, my first jet ski so i'm trying to get up to speed. This forum has been a great help so far so thanks to all contributors. The first time I put it in the water I had a problem with acceleration, getting to speed very slowly topping out around 30 MPH with...
  8. S

    1997 Sea-Doo SPX Issue installing carbs, throttle cable sticking

    1997 Sea-Doo SPX, This issue started after I removed the two carbs and cleaned them and replaced the gray hoses. Got everything hooked back up, but when I bolt the carbs back to the engine the throttle cable sticks. I've replaced the throttle cable since it was a little frayed. The carbs and...
  9. F

    1997 Seadoo Sportster

    Hi Everyone! New to forums, but thought I'd give this a try. I need help with my boat! I've owned boats for 34 years, but this is the first SeaDoo. The boat is great when it's running. I can give details to my question regarding lack of acceleration to plane out after I see if this...
  10. T

    787's / Challenger 1800 - missing RPM range - FUEL problem

    Hi everyone: I have a Challenger 1800 with twin ROTAX 787's and I'm running into a problem were i'm missing the RPM range between 1500 & 4000 on one engine only. Symptoms are as follows: WHEN COLD - Engine starts and idles fine at around 1500 - if i increase throttle it slowly creeps...
  11. lswaffield

    Challenger Fuel Lines

    I have two fuel lines coming from the baffle pickup assembly that uses a Y to go into one line then another Y to split off to each carb. I believe in less is more. Does anyone have any input on me just using two lines from the baffle pickup assy directly to the two carbs... one line for each...
  12. XP8001996

    Carburetor help: Can I interchange 787 carbs from one machine to another

    Hello all, I have a 1997 Sea Doo XP 800 that needs some new carbs. I have the old ones, but they have some rust in them and I got them all taken apart so I was just thinking of getting some good used ones off eBay. My question is: I am having trouble finding carbs on eBay that came from a XP...
  13. C

    96 sea doo gtx won't start after carb rebuild

    So I recently purchased a 1996 sea doo gtx 2 stroke a couple weeks ago. I took it out on the water and ran okay. second time I took it out i started having some problems. problems starting, dying, bogging out, alternating rpms. I was advised my carbs needed a rebuild so I took it upon myself to...
  14. C

    Correct carburetor for 1996 sea doo gtx/gsx 787

    I bought two brand new 40mm carburetors for a 1996 sea doo gsx. The carburetors fit on the jet ski perfectly however there is an extra assembly on the left side of the pto side that looks like some type of fuel pump. There are also two small injectors that look like they are for the choke...
  15. B

    97 GSI Power Issues

    My 97 gsi bogs off while accelerating and maxes out around 4K RPM EXCEPT when I hit a wave with a good jolt and the RPMs then go up to around 5.5+K (which it then appears to be delivering full power). This additional power will last for a second or so (unless I hit another wave). It seems that...
  16. S

    2000 Sea-Doo LRV 951 motor / Mikuni BN46i Carb rebuild

    Hi, I got a 2000 LRV that only had 25 hours on it, and had been stored inside for the last 10 years. It is beautiful, but when I went to use it late last summer I learned it had the grey fuel lines. So anyhow I have removed the carbs (wow, what a pain) and in disassembling the mag carb I...
  17. C

    96 hx fuel system problems

    We've rebuilt the carbs on this hx and carefully followed all instructions to a T. It still wouldn't run. So we thought maybe an alternate set of carbs would help. So, we cleaned up another set and put in new parts. It still won't run. The spark plugs are always wet, and no start...
  18. P

    1999 GTX Limited not getting fuel.

    I just recently Changed all of my fuel lines from the grey hoses to all new hoses. I also removed the carburetor and cleaned out the last chance filters. Cleaned up mighty nice. I reassembled the carburetor and after a minor hiccup with some loctite, got the carburetor back on. When we...
  19. G

    Carb pops are high RPMs

    To build off an earlier thread, my ski runs great at low RPM's. At about and over 3/8 throttle, the ski pops, at the same time the ski stops pushing. This lasts only 1 second and the ski continues as normal. This happens at random but on average ever 3 seconds or so, regardless of what the High...
  20. D

    02 XP Difficult to Start

    Hey everyone! I bought a 2002 XP last week that runs fine once it is started, but is very difficult to start. It took me about 30 minutes and 1-1/2 batteries to get it to start cold. After it starts for the first time it easily restarts and runs fine. I got it fairly cheap and figured that...
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