Engine Problems...

Engine Problems...
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Engine Problems... - 5/4/2008 8:18:40 PM

ENZO7

Posts: 216
Joined: 3/25/2008
From: Jacksonville, FL, USA
Status: offline

I recently installed a pull start on my TRX 2.5 and when ever I pull the cord the engine will fire and then very quickly climb in RPM and then die. This all happens in the course of like 2 seconds and I have no idea what is going on. If you need more of an explanation let me know. Is my engine shot? What is wrong?

Please Help!!! Thanks

_____________________________

T-Maxx 2.5 With Pull Start, RPM Arms, Big Bore Shocks, Motor Saver Filter, and a VG Roll Cage

Post #: 1

RE: Engine Problems... - 5/4/2008 8:46:04 PM

Mspeed

Posts: 907
Joined: 2/9/2007
From: , VA, USA
Status: offline

I'll take a stab at it. Bare with me as I ask a few questions to narrow it down. When you are primming it for starting, are you covering the exhaust or putting fuel right in the carb neck? If you are covering the exhaust, does the fuel flow right up to the carb easily? Did you remove the backplate from the engine when installing your pull starter?(exposed the rod inside) Have you removed or adjusted anything else since putting on the pull starter?

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Nothing to Prove, but if someone can figure out why my Jato will not work they are truly the best, I have tried everything.

(in reply to ENZO7)

Post #: 2

RE: Engine Problems... - 5/4/2008 11:28:35 PM

Soppy

Posts: 434
Joined: 12/2/2007
From: Ponte Vedra, FL, USA
Status: offline

He had to re-solder his reciever switch because something in there broke (I forget what). He had just taken the whole thing apart to clean it too. I believe he is covering the exhaust but IDK how it was flowing. I think he did remove the backplate but I am not positive. Hope that helps a bit till he can get on.

(in reply to Mspeed)

Post #: 3

RE: Engine Problems... - 5/4/2008 11:45:15 PM

MJAsony2305@aol.com

Posts: 1025
Joined: 12/30/2007
From: Dallas, GA, USA
Status: offline

air leak....
or sounds to me like its not getting enough fuel like when you turn off the engine climbs in RPM then dies.l

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rustler 3.3 come on try me.

(in reply to Soppy)

Post #: 4

RE: Engine Problems... - 5/5/2008 1:00:12 AM

ENZO7

Posts: 216
Joined: 3/25/2008
From: Jacksonville, FL, USA
Status: offline

quote:

ORIGINAL: Mspeed

I'll take a stab at it. Bare with me as I ask a few questions to narrow it down.

Alright here goes...

When you are primming it for starting, are you covering the exhaust or putting fuel right in the carb neck?: I blow into the exhaust hose and it goes directly to the card but when I put my finger on the pipe and pull nothin happens...

If you are covering the exhaust, does the fuel flow right up to the carb easily?: Not Really

Did you remove the backplate from the engine when installing your pull starter?: Yes you have to to install the pull start

(exposed the rod inside) Have you removed or adjusted anything else since putting on the pull starter?: No I put the pull start on yesterday.

_____________________________

T-Maxx 2.5 With Pull Start, RPM Arms, Big Bore Shocks, Motor Saver Filter, and a VG Roll Cage

(in reply to Mspeed)

Post #: 5

RE: Engine Problems... - 5/5/2008 1:02:54 AM

matts6887

Posts: 1156
Joined: 3/27/2008
From: scottsdale, AZ, USA
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quote:

ORIGINAL: MJAsony2305@aol.com

air leak....
or sounds to me like its not getting enough fuel like when you turn off the engine climbs in RPM then dies.l

Yep, this is the same thing I was thinking only MJA beat me to the punch definately sounds like a leak somewhere to me as well because of how the rpm's climb up then the engine totally dies....

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"If U havent broken anything....U arent driving it hard enough"

(in reply to MJAsony2305@aol.com)

Post #: 6

RE: Engine Problems... - 5/5/2008 1:03:01 AM

ENZO7

Posts: 216
Joined: 3/25/2008
From: Jacksonville, FL, USA
Status: offline

quote:

ORIGINAL: MJAsony2305@aol.com

air leak....
or sounds to me like its not getting enough fuel like when you turn off the engine climbs in RPM then dies.l

No I think it is getting fuel because it is a very high rev no like when you pinch the fuel lines, it is kind of like when you take all of the wheels off the the ground and give it full gas and let it get to the top RPM possible. How would I check for an air leek?

_____________________________

T-Maxx 2.5 With Pull Start, RPM Arms, Big Bore Shocks, Motor Saver Filter, and a VG Roll Cage

(in reply to MJAsony2305@aol.com)

Post #: 7

RE: Engine Problems... - 5/5/2008 1:11:54 AM

matts6887

Posts: 1156
Joined: 3/27/2008
From: scottsdale, AZ, USA
Status: offline

quote:

ORIGINAL: ENZO7

quote:

ORIGINAL: MJAsony2305@aol.com

air leak....

How would I check for an air leek?

Well u can check for a air leak around the fuel tank by taking the tank off, putting it in a sinkful of water and blowing into the lines if u see any tiny bubbles anywhere, u know thats where u have a leak. For the carb area with the engine running take a spray bottle filled with a soapy solution and spray around the base of the carb while the engine is running and look for any bubbles forming do the same think on the backplate to see if either area has bubbles coming from it If u see bubbles, then there is ur answer of where ur leak(s) or possible leak(s) are at....hope this helps some....

_____________________________

"If U havent broken anything....U arent driving it hard enough"

(in reply to ENZO7)

Post #: 8

RE: Engine Problems... - 5/5/2008 1:24:56 AM

Mspeed

Posts: 907
Joined: 2/9/2007
From: , VA, USA
Status: offline

ENZO7, First thing I would make sure your throttle is closing when you are in neutral or your throttle is at rest. Easy to do, just pull the airfilter off the carb and look in to see if there is about only a 1mm gap from being closed.

_____________________________

Nothing to Prove, but if someone can figure out why my Jato will not work they are truly the best, I have tried everything.

(in reply to ENZO7)

Post #: 9

RE: Engine Problems... - 5/5/2008 1:30:13 AM

Mspeed

Posts: 907
Joined: 2/9/2007
From: , VA, USA
Status: offline

Also, one other odd thing I have seen, is the throttle going nuts when you are trying to start it or get it running and going wide open on you. Watch your throttle linkage where it connects to the carb as you get it started. If you see a problem like this let me know, I have a few suggestions to either fix it or eliminate it.

_____________________________

Nothing to Prove, but if someone can figure out why my Jato will not work they are truly the best, I have tried everything.

(in reply to Mspeed)

Post #: 10

RE: Engine Problems... - 5/5/2008 2:32:02 AM

ENZO7

Posts: 216
Joined: 3/25/2008
From: Jacksonville, FL, USA
Status: offline

quote:

ORIGINAL: matts6887

quote:

ORIGINAL: ENZO7

quote:

ORIGINAL: MJAsony2305@aol.com

air leak....

How would I check for an air leek?

Well u can check for a air leak around the fuel tank by taking the tank off, putting it in a sinkful of water and blowing into the lines if u see any tiny bubbles anywhere, u know thats where u have a leak. For the carb area with the engine running take a spray bottle filled with a soapy solution and spray around the base of the carb while the engine is running and look for any bubbles forming do the same think on the backplate to see if either area has bubbles coming from it If u see bubbles, then there is ur answer of where ur leak(s) or possible leak(s) are at....hope this helps some....

Good I dea but I cant get my engine to even start... I dies within like a second of the pull.. Help

_____________________________

T-Maxx 2.5 With Pull Start, RPM Arms, Big Bore Shocks, Motor Saver Filter, and a VG Roll Cage

(in reply to matts6887)

Post #: 11

RE: Engine Problems... - 5/5/2008 3:02:26 AM

ridgewalker

Posts: 397
Joined: 1/6/2007
From: manchester, NH, USA
Status: offline

Mabey the carb is out of adjustment.Mabey it is to lean?
Set the lsn at 1.5 turns out andt the hsn at 4 turns out.By turns out i mean tighten down the high speed neddle till it stops don't crank on it just close it nice and easy,then turn it out 4 complete revolutions,you could mark a spot on the hsn with white out or a silver sharpie marker to make it more easy to count your turns.

Now the low speed needle,same thing tighten it down (clockwise) this one is small so be easy when it is tightened down it is closed.Now turn it out 1.5 turn's.
That should be good to get it started and it might be a bit rich depending on your weather but it will get it in the ballpark incase anything was turned during a cleaning.

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Wheely King,Stampede XL-5,Stampede 4x4,New Era T-Maxx,Revo 3.3,Jato 2.5,
I can''''t stop thinking.

(in reply to ENZO7)

Post #: 12

RE: Engine Problems... - 5/5/2008 12:22:58 PM

ENZO7

Posts: 216
Joined: 3/25/2008
From: Jacksonville, FL, USA
Status: offline

How do you reset the idle screw?

_____________________________

T-Maxx 2.5 With Pull Start, RPM Arms, Big Bore Shocks, Motor Saver Filter, and a VG Roll Cage

(in reply to ridgewalker)

Post #: 13

RE: Engine Problems... - 5/5/2008 4:30:26 PM

matts6887

Posts: 1156
Joined: 3/27/2008
From: scottsdale, AZ, USA
Status: offline

quote:

ORIGINAL: ENZO7

quote:

ORIGINAL: matts6887

quote:

ORIGINAL: ENZO7

quote:

ORIGINAL: MJAsony2305@aol.com

air leak....

How would I check for an air leek?

Well u can check for a air leak around the fuel tank by taking the tank off, putting it in a sinkful of water and blowing into the lines if u see any tiny bubbles anywhere, u know thats where u have a leak. For the carb area with the engine running take a spray bottle filled with a soapy solution and spray around the base of the carb while the engine is running and look for any bubbles forming do the same think on the backplate to see if either area has bubbles coming from it If u see bubbles, then there is ur answer of where ur leak(s) or possible leak(s) are at....hope this helps some....

Good I dea but I cant get my engine to even start... I dies within like a second of the pull.. Help

I would try re-setting the needles to factory default settings which are 4 turns from out for the high speed and flush with the end of the carb arm/body for the low speed....these are usually too rich obviously, but it should hopefully get ya going again then re-tune from there

< Message edited by matts6887 -- 5/5/2008 7:06:38 PM >

_____________________________

"If U havent broken anything....U arent driving it hard enough"

(in reply to ENZO7)