Water and ECU's don't get along very well.
Check to see if the fuel pump is getting 12 volts and a proper ground.
Verify the ground at the chassis to the battery is good and of course let us know if you have spark whilst cranking.

 

The fuel pump delivers fuel, the ground wires check out, and both plugs have spark....

...whats next?


Anyways, since i've been a member on here for 2 years but never posted until now, I guess I can show you what the toy looks like...

Here it is after the first build...

...and here it is after the 2nd build as it sits now...

Anyway, lets get back on track...what do I check next with my motor?

 

Let's get the obvious out of the question, what's compression??

 

Just reread your post, you do have spark! My bad!

 

Do you hear the fuel pump start?
Whoops, Here bagman have another cup of coffee with me,after re-reading see you've checked fuel too!

 

Sorry, can't help you at all....but those pictures look like Silver Lake...another Michigan rider? Your rig looks awesome, I would love to see it in action out there.

 

Yup, that's Silver Lake...been going there for the past 9 years. It's not much, but it's better than nothing. I want to get this thing up and running so I can go out there again and actually use it this time.

Anyways, just checked my compression. One cylinder is at 165 PSI, and the 2nd is at 157 PSI - took a few more than 10 cranks to get up there on both cylinders...that's for sure..

what now?

 

When I checked fuel, I only checked it at the fuel pump and at the end of the fuel line...I didn't check injectors so I started to get excited thinking that they were clogged...I left my dinner sitting and ran out to the garage....

fuel injectors are clean and working properly...dang...

what else is there?

Its got air, its got fuel, its got spark...there's compression....it should fire up but its not. What the heck

 

since you stated the eng is hp.....possable the crank triger slipped and is sending spark at wrong time?????

 

The motor internally is all stock. I only have a clutch kit, reprogrammed ECU, and an exhaust...

I guess anything is possible though.

Where is this crank trigger you speak of and how do I fix it if that is in fact the problem? How do I even know its sets right in the first place? I won't have time until next weekend to start stripping this thing down if that's what i'm going to have to do to fix this problem.

 

By chance have you notice if the speedo is lighting up? Hoping maybe as simple as the fuse that serves both the speedo and ECU!

 

The crank trigger would be the last thing to check unless you have alot of power and your reving it to high.This will bend the crank!

 

You might try checking fuel pump pressure. Mine dropped from 39 to 24.

You might have some fuel to the injectors but not enough for them to spray.

 

I got a bit antsy and decided to pull out the ECU....ends up there was water in the ECU. So I take it apart and let it air dry and eventually put it all together.

Now the motor just keeps cranking and cranking and wont even start at all.

Know anyone else with a ECU to try?

 

The speedo is lighting up and I checked all the fuses already.

I pulled the fuel rail off and tested the injectors just letting them mist into a rag. They were spraying, but I will get out into the garage tomorrow morning to check out the pressure they are working at.

If everything checks out, I might just take it to the dealer and let them figure it out since I will be away from home for the week for work.

Just keep the suggestions coming and i'll see what I can do with it in the morning

 

I got a bit antsy and decided to pull out the ECU....ends up there was water in the ECU. So I take it apart and let it air dry and eventually put it all together.

Now the motor just keeps cranking and cranking and wont even start at all.

Know anyone else with a ECU to try?

The only person I know personally that has one is Andy over at spectrum/rzr tech...
He's 3 hours away from me.

But could it really be the ECU if i'm getting spark, air, and fuel?

 

crank trigir is pressed on the end of crank..... also pull valve cover make sure cam gear didnt break see if valves are opening with fuel and spark it should start....but if timing or valves are wrong it wont

 

Could it be possible that the water in the ECU may have caused something to get messed up causing it to throw off the timing?

Maybe I can talk to the dealer tomorrow and steal an ECU for a few minutes...anything to keep me away from having to tear into the motor if I can help it

 

ya id try the easy stuff first i was just trying to think of anything that could be possable hope its just the ecm...but its pricy too....

 

missed the comp test...opps.

 

I think johnnycat8 should turn his shop into A utv repair shop!There A hell of alot easier to work on and funner too!

 

Went to the dealer today trying to get them to loan me an ECU, but since its an electrical part, they didnt want to risk me messing it up. I guess it's understandable.

So I ended up calling Andy over at rzr tech and leaving him a message. We will see if he can get me a loaner out.

I just want to get this thing fixed.

 

true....but so far in the sac area 3 places have tryed and all lasted just over a yr...

i had thought about it till i saw not alot of demand for it now parts and mail order that seems to work...

 

So your going to drive 6 hours to borrow a ECU to test it? Then you still would have to return it. On top of that the dealer does have a point. There is a chance your issue could damage the loaner ECU. I'd just let a dealer run a diagnostic on it. Would be cheaper and easier then driving all the way to rzr tech. Would also probably tell you exactly what the issue is..

 

I'll see if he can ship me one. He's got my address, so we will see how that goes. I will be going up through that area next weekend as well, so that would be a perfect time for me to return the ECU...If he doesn't go for it, then I will like you mentioned, give it to the dealer and see what they have to say about it.

 

I just finished going through the exact same problem your haveing except that my ecu was not wet.
I was quadding through some mud and got stuck in some deep soup, while getting pulled out, my rzr died for a couple seconds, when I got it re-started it would only idle, if I gave it some gas, the engine would stall. Eventially it would not start at all.
I tried everything you did, new plugs, re-greased all the electrics, dried everything out.

The problem turned out to be a plugged spark arrester in the tail pipe, as soon as I cleaned it, no problems.
May be worth a look, sure glad I didn't take it to the dealer.

 

A plugged spark arrestor...how frustrating is that? You go through all the stuff and for it to be something like that?

I actually have a spark arrestor on mine as well. I will be home Thursday evening, and I will make sure that the first I do when I get home will be to get into the garage and check out my spark arrestor.
Hopefully it's that easy. If not, I will still need to try and get my hands on an ECU to check that out as well.

Guess we will see.

I'll keep everyone posted as soon as I get things checked out.

 

End of the muffler.
Page 94 in the Owners Manual
http://pi54.com/corp/manuals/Owners/9921878r02.pdf

 

So i've made sure that it was all clear in the tail pipe. If I did get water in the engine and bent a pistion rod would there be any chance of it turning over? I put some menthyl hydrate in the tank yesterday and came in this morning to try it. Got it upto 1000 rpm then it shut down again. Any thoughts?

 

Check and make sure both fuel injectors are getting the signal to fire while you are cranking. My ecu went bad and was only firing one fuel injector. so i was running on one cyl. and idleing low with it missing and running like sh_t until I replaced the ecu. There is a wiring diagram on here so you can see how it all works but you can check for voltage at the connector to the fuel injector check both because they are fired individual I think it should be about 6 or 7 volts dc