90 Sport Jet Carb Issues

[kend301]

Re: 90 Sport Jet Carb Issues

Post them up in here ! Let everyone get a look

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

Post them up in here ! Let everyone get a look

Here are the pictures he sent me. He said the previous owner repainted the green on the boat yellow (not the best choice) I'm supposed to meet up with him this week. He said he took the carbs off to clean them etc and ended up buying a bigger boat. He said the boat has sat for the last two seasons.

Does anyone know what the difference is in the 93 carbs on the jazz and the 95 carbs on the reflexx? They have different part #'s but they appear to be the same carb?

Thanks
Christian

 

[kend301]

Re: 90 Sport Jet Carb Issues

I would do the deal , you will get 700 out of that parting it out easy , The carb difference was the Idle circuit , Improved flow and serviceability on the later models . Just for your info I just bought a set of 93 carbs (different motor larger flow) for my boat for the winter mods I plan on doing . I am hoping they will fit .

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

I would do the deal , you will get 700 out of that parting it out easy , The carb difference was the Idle circuit , Improved flow and serviceability on the later models . Just for your info I just bought a set of 93 carbs (different motor larger flow) for my boat for the winter mods I plan on doing . I am hoping they will fit .

Ok, just picked it up last night. 93 jazz. For a moment I considered using the jazz as my fixer and part out the reflexx b/c of the open bow on the jazz. But in the end, I like the reflexx better and it is in much better shape than the jazz. So, here are some shots of the motor from the jazz that I took this morning. Previous owner took the carbs off to clean them and they are in a box he gave me.

Has the ignition been converted on this one? To me it appears to be the switchbox etc. But with what I saw noted as design #2 which I believe would be the red stator. I may be wrong, but that is what I think.

Story goes it sat last summer and up until now b/c he bought another boat. He fired this one up to get it ready to sell. Said it ran rough so he pulled the carbs to clean them etc and then he ran out of drive and time to fix it so he just decided to sell it as is.

Basically, what do you think I should do at this point? Should I clean up the carbs, hook up water to it, and try to fire it up and if it runs just swap the entire thing out into my reflexx? I know I need to pick up a few gaskets for the carbs etc.

 

[kend301]

Re: 90 Sport Jet Carb Issues

Gotta study the pics , Look up some part numbers to give you accurate advice , Yes you have the red stator , most likely the switchbox is bad . I am gonna need a day or so to come up with some results in the mean time hook a battery up to the jazz and do the ignition tests , A compression test and that will help lots ..In fact before you do the compression test , pull the plugs , spray wd40 in each cylinder rotate engine a few full turns , repeat 3 times let it sit for a day then test compression .

 

[kend301]

Re: 90 Sport Jet Carb Issues

BTW the fitting on top of the head is a perfect example of the "consumer" flush kit... Works good to clean the water passages BUT NEVER start the boat with only it hooked up , You will hear a boom , you will spend money on the ride plate . Do the tests I asked for and we can start taking this block apart for a look .

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

Gotta study the pics , Look up some part numbers to give you accurate advice , Yes you have the red stator , most likely the switchbox is bad . I am gonna need a day or so to come up with some results in the mean time hook a battery up to the jazz and do the ignition tests , A compression test and that will help lots ..In fact before you do the compression test , pull the plugs , spray wd40 in each cylinder rotate engine a few full turns , repeat 3 times let it sit for a day then test compression .

Thanks for the info and advise. I'll try to run some tests this weekend or first of the week.

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

BTW the fitting on top of the head is a perfect example of the "consumer" flush kit... Works good to clean the water passages BUT NEVER start the boat with only it hooked up , You will hear a boom , you will spend money on the ride plate . Do the tests I asked for and we can start taking this block apart for a look .

Hopefully other people will see the same picture to see what you are talking about. If I had not read your warnings about that on here I probably would have made the same mistake others have made.
I'm going to look for the fittings you referenced in other posts to be able to start it in the future.

 

[kend301]

Re: 90 Sport Jet Carb Issues

Glad to Help , you are gonna have one kickin boat when it is done !

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

I was looking over the parts diagram on line for the 93 and the 95 motors. It appears that the 93 uses a choke design and the 95 uses a fuel enricher?

What is the fuel enricher?

Will I be able to hook the 93 motor choke setup to my 95 reflexx? How will the choke hook up etc?

 

[kend301]

Re: 90 Sport Jet Carb Issues

The orginal block you posted pics of is set up for a choke , that is what the round solenoid is between the first and second carb mounting point on the intake .. You are fine , 95 was when they went to the enricher but it was late 95 and the wire and signal are the same to the choke or the enricher .

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

The orginal block you posted pics of is set up for a choke , that is what the round solenoid is between the first and second carb mounting point on the intake .. You are fine , 95 was when they went to the enricher but it was late 95 and the wire and signal are the same to the choke or the enricher .

You are a wealth of information. I don't think there is a question you can't answer.

 

[kend301]

Re: 90 Sport Jet Carb Issues

You are a wealth of information. I don't think there is a question you can't answer.

Thanks , As I stated before you are going to have a Kickin boat when you are done

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

Ok, so here is some additional info that I have at this point.
I did some tests on the motor that is in the Jazz that I picked up. I put the battery on a charger to make sure it was charged.

Battery: 12.72 volts

Compression: Top 120, middle 40, bottom 110.
So compression is bad on the middle cylinder. Looks like I will have to check compression on my other motor.

Stator: part #174-8778k1 (which I believe is a black stator)
In the pictures I posted you can see the long black box attached to the side of the motor that would indicate red stator. However, the wires coming from the stator are as follows:
Blue wire that goes to a green/white and a red wire that goes to a white/green. Both of those go to the black box. From the black box is a blue wire that goes to the switch box.
There is a red/white and a blue/white that both get attached to a bolt on the corner of the switchbox.
There are to yellow wires that go to the regulator.
Ohms: 600 (although I'm going to try to retest that to make sure)

Trigger: part #134-7029-3
Using the white/black as ground:
brown: 900 ohms
purple: 900 ohms
white: 900 ohms

Test: Tried to turn it over, no spark. Disconnected the black/yellow wire from the switchbox and there was spark. HOWEVER, I just realized that I did not hook up the kill switch when testing it. .. idiot... I will retest that tonight so there may be nothing wrong there.
Disconnected the yellow wires from the voltage reg and no spark, but again I did not have the kill switch attached.

Switchbox test. set volt meter to 20, red meter to ground, black meter to white/black at the box.
Only 1.2 volts BUT do I have to have the kill switch attached when I test this?

Regulator: TRR3072
It looks to be the newest part on the motor
However, tried the ohm test stated elsewhere and I was not getting any readings in anyway I was connecting them. Don't know what was up there.

So any advise on what I posted is appreciated.

 

[kend301]

Re: 90 Sport Jet Carb Issues

I need some time to go go over these readings , but before you give up on that block , spray wd 40 in each cylinder and rotate by hand 3 times , respray rotate again , put the plugs back in and give it a day , do the spray and turn thing one more time and recheck compression . Spark with the black /yellow is an indication of a harness short in the boat or a bad rev limiter . connect at switchbox , disconnect at rev limiter and check spark , post results . Do not worry about the kill switch being hooked up for now .

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

I need some time to go go over these readings , but before you give up on that block , spray wd 40 in each cylinder and rotate by hand 3 times , respray rotate again , put the plugs back in and give it a day , do the spray and turn thing one more time and recheck compression . Spark with the black /yellow is an indication of a harness short in the boat or a bad rev limiter . connect at switchbox , disconnect at rev limiter and check spark , post results . Do not worry about the kill switch being hooked up for now .

Update.
I connected the kill switch and turned it over. Now it have spark! So, at this point I don't know if it would run or not. It seems I have the black stator by the wire colors but w/ the black box that would be with the red conversion. By what I've read I dont know if my setup is correct or not. Or if everything is working, but I do have spark.

Do I have a rev limiter? I dont see a box for one like on other boats I've looked at.
Also, I'll do the wd40 again. I thought about the fact that there is no oil in the cylinders as well.

I appreciate the help. I posted all the readings I have right now.

 

[kend301]

Re: 90 Sport Jet Carb Issues

Which boat is the motor in , one should have a push to kill the other should have a push/insert lanyard key to run setup .. Since you are lucky enough to have 2 please let me know which one you are testing the motor in .

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

Which boat is the motor in , one should have a push to kill the other should have a push/insert lanyard key to run setup .. Since you are lucky enough to have 2 please let me know which one you are testing the motor in .

I've been testing it in the 93 Jazz. Eventually everthing will be going into the Reflexx as that is the boat I'm going to keep. The jazz has a red pin that needs to be pressed down. You slide on the piece at the end of the lanyard and it depresses the red pin. Once I did that I had spark on all 3 cyl. I'm just confused about the readings I posted. They may be correct for this year/setup etc I just don't know.

 

[kend301]

Re: 90 Sport Jet Carb Issues

All your OHM readings are good !!! and right down the center of specs !!!

 

[philly5eagle]

Re: 90 Sport Jet Carb Issues

All your OHM readings are good !!! and right down the center of specs !!!

Really??? Very cool.
I found it strange that it has the black stator but the black box that is usually found on the red stator. Any idea what that is about?

Also, where would the rev limiter be on this?

I'm going to do the wd40 on the pistons a few more times and see if the compression comes up on the jazz motor. If not, then I'm going to swap everything with the other motor and check compression on that one.

I've got to order some gaskets etc for the carbs so I can clean them up before I put it together.

Thanks
Christian