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| I have an older MTD tiller with a Briggs 5 hp engine w/ tank mounted carb. The engine has not been started in 6 or 7 years. There is some fuel in the tank and i will remove tank, clean and re-install before attempting to start it. I am aware that a carb rebuild may well be needed but would like to try starting it before that. I would be grateful for any additional advice / experience anyone might care to share. Thank you all in advance of any help. Rick |
Follow-Up Postings:
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| 1. The carb being gummed would be the possible issue IMO. Checked and cleaned should clear that need if not more. With corn gas, check for a swollen float needle seat to know the engine will get good fuel. The up-side-down level float test and rubber seat’s appearance might tell the story or it starts and appears to run out of gas. 2. Naturally, Check for Fire/spark, Fuel and Compression and if all are fair it should run. 3. I like your approach of seeing if it will run before spending on un-needed work or parts. Good Luck! |
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- Posted by bill_kapaun Z8 Orygun (My Page) on Tue, Mar 5, 13 at 14:15
| Since that carb doesn't have a float or needle........ Download the IPL for your specific engine from the Briggs website. Chances are, the diaphragm will be bad. IF it doesn't seem to get gas, replace the diaphragm. |
This post was edited by bill_kapaun on Tue, Mar 5, 13 at 14:17
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| "tank mounted carb"! Eliminated the seat, needle and bowl etc.. |
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| I would change the oil first, remove the spary plug spray carb cleaner down the spark plug hole and pull the rope with the ingition off. This will lubricate and clean out the comb chamber, Next I would check for spark while I have the spark plug out. Put the plug back in and It should fire off carb. cleaner sprayed down the venturi if you want to know it will run. while you have the carb. apart I would also check the bottom of the pick-up tube, the wire mesh screen will probably be rusted/clogged and not flow correctly or at all??? Once I got it to fire and if flat head engine along with cleaning the carb. I would also de-carbonize the combustion chamber. But, that's me I do things over the top most of the time. |
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- Posted by bill_kapaun Z8 Orygun (My Page) on Tue, Mar 5, 13 at 21:04
| Carb cleaner "lubricating" the cc? I don't think so! |
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| I don't think so! OK prime instead of lubricate (lubricate would be something wet on the dry rings and would prime the CC kinda like dumping raw gas down the carb. but IMO BETTER , don't like that? OK glad you don't. |
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| I want to thank Loger, Bill K and RC for their comments on starting a a Briggs that has been sitting.. I used most of the approach(s) you all suggested and got it running. I am going to have to rebuild the carb. but i am very happy to have the good result so far. This is a great place with great people. Thanks again Rick
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- Posted by ravenh2001 z4 maine (My Page) on Sat, Mar 16, 13 at 20:34
| I am a 2 stroke mechanic as my real job. about 6 years ago our local NAPA started selling a duel purpose carb cleaner/ starting fluid. it spicificly listed upper lube safe for 2 strokes. I have a show me aditude so the sales man took a string trimmer clamped the fuel line and ran it for 2 cans (about 12 min) wide open. It did not over heat and I pulled the muffler and the piston and cylinder looked great. Our shop of 12 uses about 12-24 cans a week and he made his sale. |
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