Ask Experts Questions for FREE Help !
Ask
    jeff65's Avatar
    jeff65 Posts: 2, Reputation: 1
    New Member
     
    #1

    Jul 18, 2011, 06:39 AM
    Briggs and Stratton 28q77-0662-e1 hot start problem
    I've been reading the question "16hp Briggs & Stratton runs & then sputters & then dies" posted by "Nick" to John C. Bridgerson January 19, 2011 and a follow up post "new thread for 16hp Briggs & Stratton Surging & dying", again posted by "Nick" to John C. Bridgerson January 21, 2011 on "allexperts"

    I am experiencing the same problem with my John Deere Sabre: engine starts, runs for 5-10 minutes. sputters, dies. I Can immediately restart the engine, but it dies after just a handful of seconds. Occasionally I can start it a third time, but again only for a matter of seconds - then it will crank but not turn over until cooled.

    I've tried to run the unit with a loose (and removed) gas cap, I've cleared cooling fins, and added oil to check for vapor lock. My understanding the muffler on this engine has no screen to check for blockage. The carb was replaced last year(July 19 2010); the carb solenoid functions - though it is "hot" (but not burning)to the touch when engine shuts down. I've changed the spark plug and fuel.

    I have purchased, but not installed the new coil yet. Is there anything left to check BEFORE replacing the ignition coil? The B&S site says to check the resistance with a multi meter by attaching it's lead "to the spark plug terminal of the high tension lead and another to the lamination stack (ground)" this resistance should be between 2500 and 5000 ohms. An infinite reading indicates an internal open circuit - replace the coil; if infinite and engine runs there is an internal break in the lead, poor connection to the plug, improper mating of the lead to the coil. Lastly, that if resistance is much lower than 2500 there is an internal short and to replace the coil. My multi-meter reads 9000 ohms, what does that indicate?
    Thank you!

    Ps, today engine will run for 5-10 seconds then will not restart. I do have spark when attempting the restarts after the engine shut down.
    DG's Avatar
    DG Posts: 1,375, Reputation: 109
    Ultra Member
     
    #2

    Jul 19, 2011, 04:35 PM

    Could be the coil but ,I vote for the carb.
    Myself I have never had much luck with an ohms meter on testing coils ,
    Unhook the groung wire going to the coil and see if you have spark.'if so look at carb . You might spray some carb cleaner in the carb and see if it starts,
    Luck

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

My 18HP Briggs and Stratton Vanguard engine will not start when it is hot [ 3 Answers ]

I have a 18 HP Briggs vanguard engine bought in 1997. It has been a good reliable engine for most of that time however since about five years ago it would not start after the engine got hot. I would have to let it cool down, then it would start. Now It won't start at all without starting fluid. The...

I can't start my briggs and stratton lawnmower [ 1 Answers ]

I have tried cleaning and drying the spark plug, I beat the air filter gently to clean it and it still won't start. I don't have many tools so I can't take it apart and I have useless guy friends lol. Please help because I can't figure it out..

16HP Briggs Stratton Problem with oil [ 4 Answers ]

What could possibly cause oil to soak spark plug. What's busted to let the oil into the cylinder? Any thoughts would be appreciated. Thanks Timid Soul

Another 16HP Briggs Stratton Problem with oil [ 6 Answers ]

I over oiled my 16HP briggs. I looked online for some help and changed the sparkplugs and oil. The tractor still runs, but I get white smoke out of the exhaust. Will the smoke "burn Off" or should I replace the exhaust. The engine is a 402700 B&S from 1988. Looking for some answers. Thank you.


View more questions Search