295 mci no power

optikid · 08-23-2021, 07:41 AM

Just got this cart going. 180 psi in both cylinders, new plugs, new air filter, new shorter belt, new timing belt, new fuel pump and carb, clutch taken apart and everything moves freely. it runs smooth wot and idling but it just has no power and i dont think its reving as high as it should. ill floor it and it will barely accelerate.even in neutral it slowly revs. Driving with the seat off, at wot the carb is wide open and the belt looks like its sitting where it should be in the clutches, and the carts going about 15. The govonor adjustment is as tight as it can go. I was going to check spark and for a clogged muffler. what else could i check? Its a 2007 ish workhorse with the bigger tires

Scott quail · 08-23-2021, 07:56 AM

Id check the valves. Sounds like the clearance may be off a little. Just a suggestion.

Cartmaster · 08-23-2021, 08:08 AM

Is it a new OEM carb or one off ebay or amazon? If one of those 20 /30 buck carbs, you ought to clean up the original OEM carb and try that before anything else. Compression seems good, so i would not suspect valves just yet. If as you say, its a new timing belt, it is possible you have the timing one tooth out, It may run, but not very well. I am going to assume at 2007 it is most likely to be an MCI engine, but if retro fitted with the older Pre MCI engine, do you have the correct igniter and coil to match the engine as they are completely different.

optikid · 08-23-2021, 09:14 AM

It's a mci. The 295 replaced a seized 350 mci. It had no power before and after the timing belt, I just wanted to change it while I had the clutch off. It's probably one of the China carbs, that's what it came with. The 350 has a old looking carb that's probably oem that I could try

Cartmaster · 08-23-2021, 09:52 AM

Just be aware that the 350 carb may be jetted a bit different to the oem 295 carb. But I think the mci jet may be OK. I am sure it uses a smaller jet than the pre mci 350. Also. As I asked. If you changed to a pre mci did you also change out the ignition components. They are completely different and will affect the running of the engine. I am sure someone will be here shortly with the details as I closed shop before the mci was introduced.

optikid · 08-23-2021, 10:59 AM

They are both mci engines, but I bought it like this, I'm not sure what was used

crash12888 · 08-23-2021, 02:36 PM

have someone start it in neutral and feel for exhaust flow from muffler.
Brothers cart had mud dobber nest in his and closed most of the outlet off, sucked all of the power from it until cleaned out.
Maybe pull the muffler and take it for a spin?

trig123 · 08-23-2021, 10:30 PM

Put a volt meter on the battery to make sure its not overcharging when you rev it up.
You would be surprised how many techs miss this ..

I bought a cart last year because the person that worked on it give up and all the time a bad V/R was causing it to charge almost 18 volts and bog it down.

This cart had 175 pounds of compression, new carb and just about everything they could throw at it trying to make it run over 5 mph.

Don't take but a second to test to make sure.

Cartmaster · 08-24-2021, 01:12 AM

Quote:

Originally Posted by optikid

They are both mci engines, but I bought it like this, I'm not sure what was used

Sorry, i missed the fact that they were both MCI engines.

Trig is here now too, so between us all we should get you sorted.

optikid · 08-28-2021, 11:30 AM

So it runs at 15 volts when it's reved up
I tried a different muffler and no muffler, didn't make a difference

08-23-2021, 07:41 AM	#1
optikid Getting Wild Join Date: Aug 2012 Location: Bradenton Fl Posts: 93	295 mci no power Just got this cart going. 180 psi in both cylinders, new plugs, new air filter, new shorter belt, new timing belt, new fuel pump and carb, clutch taken apart and everything moves freely. it runs smooth wot and idling but it just has no power and i dont think its reving as high as it should. ill floor it and it will barely accelerate.even in neutral it slowly revs. Driving with the seat off, at wot the carb is wide open and the belt looks like its sitting where it should be in the clutches, and the carts going about 15. The govonor adjustment is as tight as it can go. I was going to check spark and for a clogged muffler. what else could i check? Its a 2007 ish workhorse with the bigger tires

08-23-2021, 07:56 AM	#2
Scott quail Gone Wild Join Date: May 2021 Posts: 289	Re: 295 mci no power Id check the valves. Sounds like the clearance may be off a little. Just a suggestion.
Scott quail Gone Wild Join Date: May 2021 Posts: 289

08-23-2021, 08:08 AM	#3
Cartmaster British born Nincompoop Join Date: Feb 2007 Location: United Kingdom Posts: 2,461	Re: 295 mci no power Is it a new OEM carb or one off ebay or amazon? If one of those 20 /30 buck carbs, you ought to clean up the original OEM carb and try that before anything else. Compression seems good, so i would not suspect valves just yet. If as you say, its a new timing belt, it is possible you have the timing one tooth out, It may run, but not very well. I am going to assume at 2007 it is most likely to be an MCI engine, but if retro fitted with the older Pre MCI engine, do you have the correct igniter and coil to match the engine as they are completely different.

08-23-2021, 09:14 AM	#4
optikid Getting Wild Join Date: Aug 2012 Location: Bradenton Fl Posts: 93	Re: 295 mci no power It's a mci. The 295 replaced a seized 350 mci. It had no power before and after the timing belt, I just wanted to change it while I had the clutch off. It's probably one of the China carbs, that's what it came with. The 350 has a old looking carb that's probably oem that I could try

08-23-2021, 09:52 AM	#5
Cartmaster British born Nincompoop Join Date: Feb 2007 Location: United Kingdom Posts: 2,461	Re: 295 mci no power Just be aware that the 350 carb may be jetted a bit different to the oem 295 carb. But I think the mci jet may be OK. I am sure it uses a smaller jet than the pre mci 350. Also. As I asked. If you changed to a pre mci did you also change out the ignition components. They are completely different and will affect the running of the engine. I am sure someone will be here shortly with the details as I closed shop before the mci was introduced.

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08-23-2021, 10:59 AM	#6
optikid Getting Wild Join Date: Aug 2012 Location: Bradenton Fl Posts: 93	Re: 295 mci no power They are both mci engines, but I bought it like this, I'm not sure what was used

08-23-2021, 02:36 PM	#7
crash12888 Gone Crazy Join Date: Jan 2007 Location: Chesterfield, Va Posts: 6,021	Re: 295 mci no power have someone start it in neutral and feel for exhaust flow from muffler. Brothers cart had mud dobber nest in his and closed most of the outlet off, sucked all of the power from it until cleaned out. Maybe pull the muffler and take it for a spin?

08-23-2021, 10:30 PM	#8
trig123 Vintage tech Join Date: Sep 2009 Location: South Posts: 3,216	Re: 295 mci no power Put a volt meter on the battery to make sure its not overcharging when you rev it up. You would be surprised how many techs miss this .. I bought a cart last year because the person that worked on it give up and all the time a bad V/R was causing it to charge almost 18 volts and bog it down. This cart had 175 pounds of compression, new carb and just about everything they could throw at it trying to make it run over 5 mph. Don't take but a second to test to make sure.

08-28-2021, 11:30 AM	#10
optikid Getting Wild Join Date: Aug 2012 Location: Bradenton Fl Posts: 93	Re: 295 mci no power So it runs at 15 volts when it's reved up I tried a different muffler and no muffler, didn't make a difference

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