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timothy covey Posted on Nov 06, 2019
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18.5 briggs intek wont turn pass the compression stroke take out plug runs good. have a new battery

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robert faass

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  • Expert 87 Answers
  • Posted on May 13, 2020
robert faass
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Joined: Jan 30, 2011
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Might be the wrong plug, too long and hits the piston...
Or your oil is low.
Or your battery is weak... try jumper cables from a car directly on the starter.
Or move the engine by hand just over the compression point, so when you start it has more speed to get past the compression :-)

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Anonymous

  • 59 Answers
  • Posted on Jun 27, 2009

SOURCE: briggs & stratton 18 HP intek ohv won't start

check the safety switches one of them are bad

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Anonymous

  • 252 Answers
  • Posted on May 02, 2011

SOURCE: briggs 17hp intek overheadvalve on

hi there

pauly46 here

if engine seems to labour when trying to start as if too much compression ?

try adjusting to in and ex valve clearance to 0.003" inlet and 0.005" ex

inlet valve is the bottom valve, and has a alloy push rod. ex valve is top valve and has steel push rod ( as viewed from the front of the machine with rocker cover off ) )

note rotate engine with plug out to tdc compression stroke , then rotate it down the bore on power stroke by 1/4 inch ( 6.35 mm ) this is the point for setting in / ex valve clearances

manual says 1/4 pst tdc on compression stroke - this eliminates decompressor lift from the setting


cheers hope it hepls

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Hard hitting on compression stroke when starting
Most Briggs deco vaves are internal and pretty reliable, the valve clearances are very important, if the exhaust valve clerance is too wide the valve lifter will not work, if there is no adjustment yoy would have to fit a new service valve and re do the clerance by removing material from the valve stem
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Jan 02, 2014 • Briggs AND Stratton Intek Briggs &...
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Feb 08, 2013 • Briggs & Stratton Intek Snow Horizontal...
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Briggs 17hp intek overheadvalve on a john deere L100 has developed a hard start hard spin on compression stroke. new battery new starter
hi there

pauly46 here

if engine seems to labour when trying to start as if too much compression ?

try adjusting to in and ex valve clearance to 0.003" inlet and 0.005" ex

inlet valve is the bottom valve, and has a alloy push rod. ex valve is top valve and has steel push rod ( as viewed from the front of the machine with rocker cover off ) )

note rotate engine with plug out to tdc compression stroke , then rotate it down the bore on power stroke by 1/4 inch ( 6.35 mm ) this is the point for setting in / ex valve clearances

manual says 1/4 pst tdc on compression stroke - this eliminates decompressor lift from the setting


cheers hope it hepls
Read full answer
May 01, 2011 • Briggs & Stratton Garden
1helpful
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18.5 HP OHV LT INTEK BERNING UP STARTER IT DOES NOT HAVE ENOUGH BALLS TO TURN IT OVER
If you have a good battery then the problem likely is the valve adjustment. I know it sounds crazy but if the valve lift is not set right it has too much compression. These engines have a compression release for when it is cranking to make the cranking easier. When the engine starts it goes off and runs normal. If you get that adjusted it will run like new. it is pretty cheap to have the shop do it too.
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Jul 20, 2010 • Briggs & Stratton Briggs Stratton Intek V...
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Engine turns over with spark plug out but as soon as put plug in it turns over till piston comes up on compression stroke I am thinking time for new starter ?
It's possible that just the valves need to be adjusted. Instructions are on the Briggs site. These OHV Intek engines have a built in compression release that causes the problem you are having when the valve lash is out of adjustment. It's a relatively easy fix and you only have to remove the valve cover (4 Bolts) to access the rocker arms to adjust. For your info the web location is:
http://engines.myfaqcenter.com/Answer.aspx?p_faqid=3441
Go to paragraph "Adjusting Overhead Valves."
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Jun 09, 2010 • Parks Optical 13.5hp Briggs And Stratton...
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I have an 18.5 Intek Craftman Tractor. The battery
pull the plug out and crank it over....if it's been sitting, there's liquid fuel in the cylinder...can't compress liquid...drain the carb too...use fresh fuel...
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Apr 18, 2010 • Parks Optical 13.5hp Briggs And Stratton...
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17.5 briggs intek backfiring thru carb wont start have adjusted valves?
Easy things to check, flywheel key, make sure it is not broken, check the coil gap to the flywheel. could be the coil is not advancing. Check, if it has one, the oil sensor by unplugging it. hope this helps.
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Battery want charge... ok i paid to talk w/ a
Sounds like the voltage regulator is bad--will run the battery down!
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Feb 27, 2010 • Briggs & Stratton Briggs Stratton Intek V...
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CHANGED THE SPARK PLUG , HAD THE BATTERY CHARGED, ALL I GET WHEN I TURN THE KEY ON IS A HALF HEARTED ATTEMPT FOR THE FLYWHEEL TO TURN. ITS A BRIGGS AND STRATTON 18HP INTEK
Check your battery connections and connections to your starter. Try jumping the starter directly with a jumper cable. If it turns over quickly then you have either a bad battery or bad connections.

If it won't turn over with a direct boost to the starter, you need starter and or solenoid work.

Hope this helps!
Rob
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18.5 starter will not turn pass compression stroke
Try adjusting the valves. Worked for me on my 13.5 with same problems
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