I have a 1554 with the 27hp motor and it is running rough. I have tried the chock to try and blow out whatever is in the carb out and have taken the carb off and cleaned out the bowls and changed the fuel filter. What else could make it run rough? It does seem to level out under load of blades turning. Thanks for reading
SLT 1554 running rough
- Thread starter Doug802
- Start date
- Views: 4352
TedLaRue
Gold Member
I hate to answer a post with a bunch of questions, but we can give you a better answer if we have more information.
You say it smoothes out under load. Does it run rough only at idle speed? or does it also run rough at higher RPM's with no load?
If it runs rough only at idle, would you say it is "surging"? high RPM, then low, then high again, etc.? This could be a problem with the governor. Or a vacuum leak if your engine is really sophisticated. If it just runs rough with no cycle of high/low RPM, it could be an idle screw adjustment problem.
When you had the carburetor off, did you remove the adjustment screws and squirt some carb cleaner up in there? I don't know anything about your carburetor, but it's common for them to have at least one adjustment needle screw, and sometimes two or three (one for idle mixture, one for high speed mixture and maybe another to limit the throttle closure at idle).
Post more information when you have time.
You say it smoothes out under load. Does it run rough only at idle speed? or does it also run rough at higher RPM's with no load?
If it runs rough only at idle, would you say it is "surging"? high RPM, then low, then high again, etc.? This could be a problem with the governor. Or a vacuum leak if your engine is really sophisticated. If it just runs rough with no cycle of high/low RPM, it could be an idle screw adjustment problem.
When you had the carburetor off, did you remove the adjustment screws and squirt some carb cleaner up in there? I don't know anything about your carburetor, but it's common for them to have at least one adjustment needle screw, and sometimes two or three (one for idle mixture, one for high speed mixture and maybe another to limit the throttle closure at idle).
Post more information when you have time.
Double Orange
Platinum Member
Check you spark plugs.
Verrill: Plug Color Chart
Verrill: Plug Color Chart
Undercover
Silver Member
- Joined
- Dec 17, 2007
- Messages
- 124
I have the gt1554 and i surges on cold starts runs great after about 30 secs. hope you find the problem.
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MY CUB Stuff
04 GT 3235 60" deck 81hours
07 GT 1554 49.5 hours
08 cc500 push 5 hours
08 cc4175 trimmer 1 hour
07 Cub steele cart 18cu ft
---------------
MY CUB Stuff
04 GT 3235 60" deck 81hours
07 GT 1554 49.5 hours
08 cc500 push 5 hours
08 cc4175 trimmer 1 hour
07 Cub steele cart 18cu ft
