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Rough start but then will run good

#1

R

roro

I have a snapper riding mower 12.5 hp intel engine. It will usually start on first pull but will run rough. After about 5 or 10 minutes running with me working the throttle it will pick up and run fine.New filter and carb. By the way it was doing this with old carb also. Any suggestions?


#2

Mower King

Mower King

roro said:
I have a snapper riding mower 12.5 hp intel engine. It will usually start on first pull but will run rough. After about 5 or 10 minutes running with me working the throttle it will pick up and run fine.New filter and carb. By the way it was doing this with old carb also. Any suggestions?
Click to expand...
Is it choking itself too much, then clearing out after awhile...is there blackish smoke coming out the exhaust until it starts running right?


#3

R

roro

I don't think so and there is no black smoke coming out of exhaust .......kinda sounds like.........BAM.....................bam bam..................BAM
till it starts running right


#4

Scrubcadet10

Scrubcadet10

How old is the gas?


#5

R

roro

fresh gas with stabil


#6

B

bertsmobile1

Change the spark plug
Sounds like it is fouling and shorting when cold then when it gets hot it is fine.


#7

R

roro

bertsmobile1 said:
Change the spark plug
Sounds like it is fouling and shorting when cold then when it gets hot it is fine.
Click to expand...
did put new plug in but still sounds same,


#8

Mower King

Mower King

roro said:
I don't think so and there is no black smoke coming out of exhaust .......kinda sounds like.........BAM.....................bam bam..................BAM
till it starts running right
Click to expand...
"Bam.....bam bam...........Bam"........that's a heck of an explanation of a sound......my Bam and your Bam can be TOTALY different so that's hard one !


#9

R

roro

mower king said:
"Bam.....bam bam...........Bam"........that's a heck of an explanation of a sound......my Bam and your Bam can be TOTALY different so that's hard one !
Click to expand...
lol well maybe it's a BONG!!!!!!!!!


#10

R

roro

after starting and the engine is rough running I can engage the blade and it will start running fine!!!! what"s up with this?


#11

B

bertsmobile1

Idle jet is partially clogged .
Blades on the main jet comes in


#12

R

roro

Thanks i'll check that


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