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hhp_Tech
hhp_Tech, Technician
Category: Small Engine
Satisfied Customers: 193
Experience:  20+ Years in Industry - High Performance Technician - All around Enthusiast
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Engine runs good -20 minutes and than starts popping

Customer Question

engine runs good for 15-20 minutes and than starts popping spitting and loosing power Toro timecutter 4260 21.5 hp kawaski
Submitted: 1 year ago.
Category: Small Engine
Expert:  hhp_Tech replied 1 year ago.
Hi, this is usually an indication the valves need to be adjusted.
Customer: replied 1 year ago.
could it be a coil. very few hours on mower 2012. It does not start popping till the motor heats up
Customer: replied 1 year ago.
Are you still responding?
Expert:  hhp_Tech replied 1 year ago.
Yes I'm here, the phone app we use can be slow sometimes.
Yes the coil can be getting weak as it heat up, they have had their issues. You didn't mention hours, how many are on the machine? I sais values because as the metal parts heat up they will change the valve adjustment and can make it run poorly especially if they are near one extreme or other (too tight/too loose) and it's relative easy to check & adjust
Customer: replied 1 year ago.
It has about 100 hours on it/ probably less. How do you change coil .. How do you check valves and adjust
Expert:  hhp_Tech replied 1 year ago.
Let me look up that model and spec for the valve adjustment. Have you ever done a valve adjustment before?
Customer: replied 1 year ago.
No, Also wouldn't it be easier to start with coil replacement...Now do you replace the coil.
Customer: replied 1 year ago.
How much of a probable is it to replace the coil.
Customer: replied 1 year ago.
How much of a problem is it to replace the coil
Expert:  hhp_Tech replied 1 year ago.
Replacing the coil first is not the route I would take, because you could just be wasting $50-60 on the part, not counting the time to replace it. I would check the valve adjustment first even though the hours are a bit low
Customer: replied 1 year ago.
How to check the valve adjustment and specs please
Expert:  hhp_Tech replied 1 year ago.
In putting together a zip file with the valve adj and coil replacement info then I'll post a link for you.
Expert:  hhp_Tech replied 1 year ago.
This should have the zip file for you to download.
https://files.fm/u/xgahgaqj
You'll have access to them for next 48 hours
Expert:  hhp_Tech replied 1 year ago.
Hi were you able to get the pages?