I lost a cylinder on a go devil 37efi and had to idle back to the boat ramp when I got home I did a pin out diagnostics and retrieved a code of p0336 which indicates a crankshaft position sensor noisy signal or no signal and no fuel to that dropped cylinder which from what I determined is it will not let the fuel injector open and send fuel to that piston I still have spark and my tiny tach reads out the rpm to the dead side which tells me there is no fuel present but would the crankshaft position sensor be bad? and how do I clear my codes out without the briggs code reader?

I'd double check valve train. Make sure your lash and rod/rockers are all squared away.

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Also the engine is only a year old and has less than 10 hours on it


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Soooooo, why haven't you brought it in for warranty work?

I'd check and make sure you haven't spit a pushrod. Mine has done it several times. Pretty easy fix on the water, but I'd take it in and let Briggs pay for it if you're having any issues while it's covered under their 3yr warranty period.

well problem is no one in my area is familiar with the 37efi they tell me they cant help and im left with having to drive very far to get it serviced if I do,plus this just happened yesterday 5/28/2017

Crank it up, pull plug wires with it running to isolate the problem cylinder. Remove that valve cover. Repair....

Or just go ahead and pull both covers, because I'm sure the valve lash needs to be checked on the others. I'd be willing to bet you're missing a pushrod on one out of the 4 valves.

The crank position sensor is a common deal to be out of spec on the gap mine was from the factory. I wouldn't go chasing codes, start with simple visual stuff.

As they said check valvetrain first. On the crank sensor adjust down to .020 . Ive seen some over .040

Ok i will check the valve train,the crankshaft sensor specs call for .030 but you are saying go with .020 will that be ok?


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Yes. Bring it down to .020, this is per a briggs tech rep on a job i had a while back

I found one of the rods had come loose from the seat the jam nut had backed all the way out and fell off i put it back on but what is the lash clearance for all four rod valves?


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That'll do it!

Damn!

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That looks familiar....doesnt it, ben?

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I'd bring it into a service center, just so they have record of it.
Hopefully no damage is done with it just being a push rod, but I don't know!

Thats just it where i live I'm looking at around an hour of more drive to a dealer if then he knows anything about the 37 efi everyone i call says they don't work on that particular engine


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I personally would make the drive.
Or at least call around and see who works on them.
Up to you obviously.

.005 intake .007 exhaust. It might be .008 on exhaust but it wont matter, good job finding it, now patch it up and roll on

Once u set them roll it over a few times and recheck, u got this

Valve lash is tge same on any briggs as far as how you set it. EFI doesn't change how valve lash is set.

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Spec on carb motors is .004-.006, they loosened up the spec a little for the efi not that it matters

ok which one is intake and which one is exhaust both look to be aluminum if looking at the picture is intake left or right? and do I need to be tdc

serious? would that be curtain 1 or curtain 2 OH DEAR so many choices which one do I choose. Some of us are not mechanics so be polite.

A good memorial day laugh when you go to lock that nut down dont put all the pressure twisting on the rocker, you will break the aluminum tabs off. Support the rocker as you lock it down

I did exactly that she runs like a champ better than new i believe


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Awesome! Sounds like you can set valves better than a 9 year old chinese boy!

Glad you got it sorted out!

I can set valves better than a 9 year old Chinese boy because I'm a 14 year old American boy not bad for a kid huh bet i had all you thinking i was an adult huh


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