Question about Briggs & Stratton Briggs Stratton Intek V - Twin Vertical Ohv Engine with Electric Start 22 Hp, 1" X 3 5/32" Shaft, ModelNo. 44K777 - 0027 - E1

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Briggs 21 hp OHV motor will not start after internal work.

Hello,

I had to replace the piston connector arm on my Briggs 21 hp OHV motor. It was quite a job. Luckily there was no damage to the cylinder or crankshaft. The battery was dead so I jumped it from the car (it appears to be holding a charge). The starter does works, and the mortor turns with ease. The spark plug is working (sparks against case) and it looks wet after cranking so I think there is fuel getting to the motor. Yet, the engine will not start. I'm at a loss at what to try next. Could I have messed up the timing? I lined up the timing marks on the fly wheel and crankshaft gear. Or maybe something on the carburetor. Thoughts.

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  • Briggs & Str... Master
  • 42,092 Answers

Most likely that the timing is not correct
you line up the dots on the crank gear and the cam gear not the flywheel and the the crank shaft dot
the plug will spark every time the flywheel magnet passed the coil

Posted on Apr 05, 2017

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 24 hp briggs intek vtwin won't start

This same thing happens to me and I resolve it by taking the gas line off in front of the carb and blowing air through it.....then it will run fine. I realized I could do this when I took the air cleaner off and fed it gas manually and it ran fine....and I also had gas pumping through the fuel pump. I'm not sure of the problem....either the fuel pump is losing power or their is something blocking the carburator intermitantly

Posted on Jul 14, 2009

davesoucy
  • 148 Answers

SOURCE: 14hp ohv engine getting very hot,briggs

Sounds like a mice in your muffler. Its stuck, stop using it, you'll be damaging the valve on the motor. Remove it and test it. Try to remove thing in, i know some people put it in the fireplace to turn it red and burn things (like mice) inside and open up things...

Posted on Aug 05, 2009

  • 3 Answers

SOURCE: 2.5 year old, 15.5 hp Briggs cranks but wont fire

make shore that the valves are not rideing no tappet clearance back both roccers of and try for comp there has to be a tappet clearance for there to be comp or set the inlet at 5 thou and the exhaust at 10 thou on the comp stroke .horizontal b/s have a very good past very good engine in the past

Posted on Sep 02, 2009

peterrance19
  • 399 Answers

SOURCE: I get one spark on plug, then nothing. It is a

hi y could have a sticking float in your carb causing it to flood

Posted on Nov 15, 2009

kel1guy2002
  • 3740 Answers

SOURCE: I have a briggs -stratton 12 h.p. engine on my

Hi and welcome to FixYa I am Kelly.

This post is listed under the Intek V-Twin engine that would be engine model number 281707-0148-01 so I am making my recommendations based on that model number. If your ENGINE model number is different from the one above please respond with the number.

It sure sounds like there may be a compression problem. All other elements
Fuel, Air and spark are in place. If you can not get even a backfire it sounds like there may be a valve sticking open. Probably more than one if not even one cylinder is firing.

I have one question..... Has this engine been sitting unused for a while?

Lets start with something simple. (again based on 2 cyl engine but procedure would be the same for a single cylinder)

1. Remove both spark plugs
2. Spray a very generous amount of WD 40 in BOTH spark plug holes.
3. Use the starter and turn the engine through for about 5 seconds
4. Again spray WD 40 into the cylinder head via the spark plug holes and let it soak for about 15 minutes.
5. Turn the engine through again with the starter for at least 15 seconds. Pause 1 min and then another 15 seconds.
6. With assistance Use your thumb to cover the spark plug hole opening and check each cylinder for compression

Compression = Yes / Install spark plugs and try starting.

Compression NO ... If engine is OHV remove valve cover cap(s) and spray WD 40 through the valve springs onto the valve stems then let them soak for about 15 minutes.
Turn the engine through again

Flat head engine

Remove cylinder head only and check the valve seats for coking in the seats. ESPECIALLY the exhaust valve. There should be a visual ring where the valve mates to the valve seat. If you can not see a visual ring then the valve seats should be hand lapped with valve grinding compound. (Valve Spring will have to be disconnected but NOT removed to hand lap with valves grinding compound)

Once you get a ring that you notice on the valves then reconnect the springs and install the head.

Check for compression with your thumb by having the engine turned through.

You really should have compression at this point.

Install spark plug and start the engine.

If you need more assistance or.. have a different model number other than the one above... then just respond here and some one will help you.

Thanks for using FixYa.

Kelly

Posted on Apr 14, 2010

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