ok this is going to be a long one but i need MAJOR help. i have a 97 challenger 1800. i have had to replace an engine with a rebuilt one. my biggest mistake was taking it to a non seadoo mechanic but they promised they could work on it and they have worked on several. this is the second time they have given me the doo back that won't even start. they cleaned the carbs on the new engine and replaced it. i had it started in the driveway for like 2 seconds before i went to the river to make sure it works. i took it to the river and fired up the old engine and when i went to fire up the new one it sounded like it wanted to start but then bogged down and then beeped several times. i docked it and started trying to start it but it wouldn't even turn over. i took out the fuses and cranked it a few times and gas was shooting out so that means the compression is fine, right?? i put them back in and it would continuously turn over but not fire up. soon after that it started beeping again about 8 times and would finally get back to what it was doing before about not even turning over. have no clue what to do. the mechanic can get it doing out of water and promises me he tests it in a water test tank and has had both engines up to 7k rpms but when i put it in the water i can't start the new engine. please let me know what i should do and i live in TN and want to know where i should take the boat for good help. and the only excuse they ever give me is that they boat has been in salt water before so it is hard to work on. thanks!!!!!!!!!!:cheers:
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Everyone Please Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- Thread starter masonf24
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one more question he said he adjusted the high speed needle and i think i have read somewhere that it is suppose to be fully closed. set to zero going clockwise, is this true and i told him that but he said that makes no since and it def. wouldn't start if i did that. if this is true i am going to get my boat and try to fix it with some of my friends. it can't be that hard of a problem since i am almost positive it is just a fuel related problem. and BTW my old engine is running fine. thanks!!!!!
Mason, the High Speed screw should be set to "0" . The Low speed should be set to 1 1/2, as a basic position. Is it possible that you just flooded the seadoo? If the mechanic doesn't know the proper settings of the carbs are you sure you can trust him to be working on your seadoo at all?
Keep us posted.
Karl
Keep us posted.
Karl
karl i couldn't agree with you more. i think i am going to go get it from them this evening but i already have a grand invested in labor! should i just cut my losses and try this myself. do you agree it sounds fuel related. it started the morning i went to the river but as soon as i got it in the water it would not start. does the engine lock up like that if it is flooded and i let it set all day and tried to start it again but was still locked up. i took out the plugs and blew a lot of fuel out and it would turn over multiple times but not fire. i wish there was some way to get one of you guys to talk me through it or even look at it. i need a diagram of my carbs to figure out what screws to try turning.
Mason the High and Low speed screws are easy to identify. The High Speed screw has a H on the carb and has a plastic cap on it to keep it from being turned more than a 1/4 turn.To properly adjust the High speed screw pop off the plastic cap and adjust it, than replace the cap with the tab in the center. The Low Speed screw has a pin through it and a L on the carb near where it is. We could talk you through your problem, but I might have the dealer get it running first, with all the money you already spent. If you go else ware you might not get a warranty on the repairs already done...for what it's worth.
Karl
Karl
Last night i set the high speed screws to zero and the low speeds to 1-1/2. Still the engine would not fire just it would keep turning as i try to start it. i checked the plugs and they are brand new and they are getting fuel and sparking. this is so confusing why it isn't starting. i think it is getting way too much fuel and just flooding it. but you would still think it would start on the first attempt. the biggest thing i noticed that when i was starting the engine the carb closest to the accelerator pump has tons of gas going in and the other carb i could barely see a drop. Could he have not rebuilt the carbs right or do you think maybe the fuel pump isn't working to one side. just let me know what you think could be a solution to this HEADACHE!!!!! i am ready to try anything. thanks:cheers:
Mason, the biggest problem here is not knowing what the Mechanic actually did to the seadoo. Is it getting spark? I would take a small amount of gas and with some oil used from the seadoo make a couple oz of pre-mix and put it in the spark plug holes and see if it fires up that way, if you have a good spark. I would also check the gap of the spark plugs too they should be at like .020"to .024" .go with .022".
Keep us posted.
Karl
Keep us posted.
Karl
i know the plug is sparking and when i took it off to see if it would spark gas came out both holes when i hit the start button. i am so confused because the other motor starts right up. do you think it is the carbs and why would one carb get so much more gas than the other one?? what could i check to fix that??
It sounds like its getting fuel... This is the engine that was replaced by the service shop???
Karl
Karl
yea but i have a lil hope now i just found on here a guy "seadoonewb" that had the EXACT same problem as me and he said it was right after a carb rebuild. he even comented on one carb getting a lot of fuel and the pto not getting any. just like mine. i wish you could read his and tell me how i should approach this. i am doing this tonight so all help is greatly appreciated. thanks:cheers:
it is titled "starting after carb rebuild" and i am wondering will it hurt anything i attempt to start it while the flame arrestor is off just to see if it starts then shut it right off??
it is very time consuming taking it off and putting it on!!! thanks again
it is titled "starting after carb rebuild" and i am wondering will it hurt anything i attempt to start it while the flame arrestor is off just to see if it starts then shut it right off??
it is very time consuming taking it off and putting it on!!! thanks again
I worked on it for several hours last night and i started checking the plugs again and noticed the closest one (when looking at the engine) only sparked every now and then and the other one didn't even spark!!!!! what do i have to do to fix this?? This would make sense if this is my problem because it is getting fuel in one carb and not in the other which also concerns me but is that normal????thanks and YES they are brand new plugs
boatmonkey82
New Member
if it is flooding try turning off the fuel , hold the throttle wide open and try to crank it , the extra air in the engine will help dry it out and it may start . but if your spark is weak then you better stick to the pros on here .
thanks for the reply but i did already try your trick but it was by accident:rofl:!! i think it is now the plugs because that makes the most sense because i can see fuel in the carb and the plugs are wet and smell like fuel when i remove them. we had a tester and grounded it and the passenger side engine had a very weak to no spark at all and we used it on the driver side and it had a bright and loud spark. i have read about the cut it back a quarter trick and i will try that tonight but i am afraid i will have to replace the coil. i already inspected that and it looks like there is only one for my 97 challenger 1800.
Mason, before you replace the coil check the ground wire for a good connection. Trace from the coil to ground. I would also remove the boot and clip and cut the 1/4 off the wire too. Use silicon spray to install the boot back on again.That way it will slide back on easier. If that fails...try changing the coil with the other engine....that will prove it is or isn't the coil.
Keep us posted...
Karl
Keep us posted...
Karl
karl i don't want to sound dumb but when you say change the coil with the other engine are you talking about changing the wires cause it looks like there is just one coil. also how can i just change the coil with the other??? it seems like i would press the start button and one engine try starting and the other engine sparks?? but i am probably way off as usual:stupid:
Mason each engine has it's own ignition coil. Swap one to the other. Each engine has it's own start /stop switch also.
Karl
Karl
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Yes, I would always disconnect the battery first...Ground- first than Red+. Install the same way...Ground- first Red+ next. Follow the plug wires to teh correct box... I'll be here most of the day...unless the rain takes out the internet...
Karl
Karl
ok just a few more questions,
1. if i get a spark back what should i focus on, carbs??? he did rebuild them and have seen people have a lot of trouble starting there boats after this.
2. everyone on here says set the high speed needle to 0 but the mikuni manual says 1.5, so which one do i use!! thanks karl you have been tons of help, but i do wish i could get some other point of views!!:hat:
1. if i get a spark back what should i focus on, carbs??? he did rebuild them and have seen people have a lot of trouble starting there boats after this.
2. everyone on here says set the high speed needle to 0 but the mikuni manual says 1.5, so which one do i use!! thanks karl you have been tons of help, but i do wish i could get some other point of views!!:hat:
Seadoo manual for that model seadoo says for the High speed screw. "0" for your seadoo engine...
This is a public forum...I'm sure someone else will chime in...don't let my 35 years experience influence you ...
Karl
This is a public forum...I'm sure someone else will chime in...don't let my 35 years experience influence you ...
Karl
another observation i had last night was that when we used the tester to see if it would spark, i would press the start button but almost everytime the engine would keep turning over for about 3 seconds and beep a few times after i released the button????? this has never happened so i am a little confused, ok REALLY confused!!!
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