Cut off under water... - Kawasaki Brute Forum
 
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post #1 of 9 Old May 26th, 2015, 11:12 AM Thread Starter
 
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Cut off under water...

I have a fully snorkeled 07 brute that has been fully rebuilt and cammed. This past weekend I rode all day and right before leaving I went racks deep and it sputtered until it died. I have the bowl drains blocked off and the side vent lines off of the carbs ran up one snorkel. I checked the air box and belt box, all dry. Some water did get in it through the exhaust but I flushed the engine 6 times to get all the residue out and she is good to go now. Should I vent the two little nipples on the bottom of the carbs beside the bowl drains or anyone have any idea of what happened?

Thanks in advance guys

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post #2 of 9 Old May 26th, 2015, 09:35 PM
 
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My 05 750 is snorkeled , and I cannot pinch off the carb drains without having the engine bog down when the carb is over full. I took a Tropicanna Orange juice bottle, drilled a hole in the lid to slide the carb overflow tube into it. I then discovered that when that bottle was overfill, the engine would bog out. I then added another hole to the lid of the catch bottle , installed weed wacker sized fuel line from the upper 1/4 of the bottle to the handlebars. Works like a charm. If you drill your holes in the lid right, no water gets in. If it fills with gas, just unscrew the lid, remove the bottle and reuse the gas. You would be surprised of how much gas you lose. I'm sure my floats are set on the higher end, but they work fine. Oh yeah, the carb overflow line should have a one way check valve on the end of it, so water can not seep back up the line to the carbs. If your carb vent lines, on the left side of the carbs, get blocked up, you will stall out too.
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05 Brute 750i Stock engine/Muzzy Pro exhaust,Vision Bruiser 14" wheels, 26" Kenda Bear Claw HTR, 3" intake snorkel w/ restriction,2" CVT snorkels,automotive 10" fan,ASR a-arm bushings,sway bar removed,buss connector mod,rejetted at #40 pilots,2 3/4 out on A/F screws,stock needles shimmed .030",# 160/# 160 main jets Keihin
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post #3 of 9 Old May 26th, 2015, 10:47 PM
 
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That is what I love about this forum. I learn new stuff every day. That is some good info right there dman.

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post #4 of 9 Old May 27th, 2015, 07:19 AM
 
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Riding over very rocky terrain at high speeds, is where I found that we lose fuel out the overflow. On a 50 mile ride, I may have to empty that bottle two or three times when the bottle is 3/4 full. Eventually I will pull the carbs and recheck float levels and maybe replace the float needles. I also have the Mr. Gaskets 42s electric fuel pump mod, so with the stock vacuum pump, this May or may not apply. Someone else needs to try this and report their findings on how much fuel they lose while riding.

05 Brute 750i Stock engine/Muzzy Pro exhaust,Vision Bruiser 14" wheels, 26" Kenda Bear Claw HTR, 3" intake snorkel w/ restriction,2" CVT snorkels,automotive 10" fan,ASR a-arm bushings,sway bar removed,buss connector mod,rejetted at #40 pilots,2 3/4 out on A/F screws,stock needles shimmed .030",# 160/# 160 main jets Keihin
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post #5 of 9 Old May 27th, 2015, 08:56 AM Thread Starter
 
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Thanks for the reply! I'll give that a try tonight! Also if I put my hand over my exhaust for even a few seconds it cuts off just like it did in the water. Is there a chance the water pressure cut my engine off?

"Ride it like you stole it"

07 Brute 750i
Stage 2 Cams
Head Work
Full Muzzy
Moose Programmer
2" Lift
30 Backs on 14 ITP 212s
Snorkeled
Full Skid Plates
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post #6 of 9 Old May 27th, 2015, 09:26 AM
 
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Thanks for the reply! I'll give that a try tonight! Also if I put my hand over my exhaust for even a few seconds it cuts off just like it did in the water. Is there a chance the water pressure cut my engine off?
Never heard of static water pressure being enough to kill an engine.

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post #7 of 9 Old May 27th, 2015, 10:39 AM
 
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Depends - How low is the idle? I had my brute idling in water, exhaust submerged for about 1/2 hour to 40 minutes - I turned up the idle when I realized I could not get out due to a broken axle and wheel fell off. Best of all, I found out the only place that took on a little water was the rear diff - and I mean very little bit of water.

05 Brute 750i Stock engine/Muzzy Pro exhaust,Vision Bruiser 14" wheels, 26" Kenda Bear Claw HTR, 3" intake snorkel w/ restriction,2" CVT snorkels,automotive 10" fan,ASR a-arm bushings,sway bar removed,buss connector mod,rejetted at #40 pilots,2 3/4 out on A/F screws,stock needles shimmed .030",# 160/# 160 main jets Keihin
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post #8 of 9 Old May 27th, 2015, 10:40 AM
 
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If the carb vents saw any water, it could have snuffed out the engine.Backing up in deep water could sometimes snuff out the engine.

05 Brute 750i Stock engine/Muzzy Pro exhaust,Vision Bruiser 14" wheels, 26" Kenda Bear Claw HTR, 3" intake snorkel w/ restriction,2" CVT snorkels,automotive 10" fan,ASR a-arm bushings,sway bar removed,buss connector mod,rejetted at #40 pilots,2 3/4 out on A/F screws,stock needles shimmed .030",# 160/# 160 main jets Keihin
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post #9 of 9 Old May 27th, 2015, 02:05 PM Thread Starter
 
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It's idling low and lopes some because of the cams but I've idled it up some but I haven't had it back in deep water yet. I may run a exhaust snorkel off of the muzzy just in case and run the nipple of the bottom of the carbs to my vent line snorkel. Just to make sure I have it all covered

"Ride it like you stole it"

07 Brute 750i
Stage 2 Cams
Head Work
Full Muzzy
Moose Programmer
2" Lift
30 Backs on 14 ITP 212s
Snorkeled
Full Skid Plates
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