My 2.5 sounds Like MOOOOOOOO Cow!

[Rocket]

I just got the new motor broke in and then after a pass,,,,,,

It started to sound like it's only running on 5 cylinders! or Kinda like a Mooooooooo Cow at low end then it seems to rap up! :?

Compression is PERFECT! I pulled the heads and NO sign of wear or anything

I changed the Plugs, Stator, Trigger, ECU, Switch box's, and gas cap!!! :shock:

Still seems to be there! :?

It's just not as "Crisp" as it was before this happend! It Sounds like a MooCow!!!

Got any ideas??? HELP!!

 

[hack02]

You forgot to pull that rag out of the mid before you set the powerhead back on. Just kidding, I know the sound your talking about, sounds like its starved for fuel for just a second.

 

[Rocket]

I know the sound your talking about, sounds like its starved for fuel for just a second.

Yeah maybe hack? :? It sounds like I blew a head gasget! But it's not!!! :shock:!

I found a small hole in the front half (below #4 injector, right by where the crank ring would sit) that somebody had tried to 2-part epoxy sometime in the past! :twisted: And it's leaking a little oil!

I wonder if this could be it?

It happend right after I had added new fuel and them I made a pass or two!???????

Thanks!

 

[hack02]

Like a blown head gasket, that would be a different sound from starved for fuel. You wouldn't think just a little oil weep would let it make a noise. Reeds look good? Just guessing now. It'll be interesting to know what it is.

 

[wj225]

Water in gas??

I had a similar situation when I had some water in the gas.

Bill

 

[Rocket]

Re: Water in gas??

I had a similar situation when I had some water in the gas.

Bill

Bill,,,,, I'll change the gas! Thanks! :shock: It happend right after I added new race gas! :?

 

[wj225]

Take a sample...

Run some gas in a glass jar. Look for any separation. Water will settle to the bottom of the jar.

Bill

 

[Rocket]

Re: Take a sample...

Run some gas in a glass jar. Look for any separation. Water will settle to the bottom of the jar.

Bill

Thanks Bill! I'm going to do it tonight! And I'll let you know what happends!

I was talking to Chuck Goodman (Nitrox) and he said the same thing! WATER!!! :?

I'll let ya know what I find tonight! :wink:

 

[Rocket]

Well that wasn't it! :cry: :cry: :cry:

Pulled out the other fuel ($5.50 a gallon) and rinsed the injectors and sytem down with new gas and injector cleaner!! They seemed to spray fine!!! :?

I even flow tested the fuel pump, 1-gallon ina less than 40 seconds!

Reeds look good too!

I'm confused! Help!!!

 

[Rocket]

Re: Take a sample...

Run some gas in a glass jar. Look for any separation. Water will settle to the bottom of the jar.

Bill

No water in 2-hours of sitting there!! :shock:


Thanks!

 

[Rocket]

I think I figured it out!! Seems that the coils on 2 & 4 were JUNK! :twisted: So I replaced all six,,,, And SHAAAZAM!!!!! Sassy's back in town!! :mrgreen:


Thanks you guys for all your imput!!!!

Now it's OFF to the race's!!