5 Hp Briggs wont start

[tundrabeagle3]

I just finished putting side cover back together after removing the governor. And I know the carb is clean because it was running good before.My valves did slide out and so did my cam shaft but i slid every thing back in. Is this typical after putting the engine back together? Do you guys have any tips on how to start it?

Thanks

 

[sexyvicta]

wat

 

[sideways]

Did you line the dots up on the cam and crank gears?

Just FYI, the things that fell out that go above your cam are the lifters, not the valves.

 

[landuse]

Pull the starter rope which has a handle on the end

 

[Jake.B]

Pull the starter rope which has a handle on the end

Lol i agree

 

[Pellethuntr]

Try spraying some started fluid in the carb.. If you already did that and no go, then try adjusting the idle screw out a half turn or turn and see if it starts, and then while it is running adjust it back until it idles smooth.. You may try a new spark plug, and also test for spark, sometimes wires and things come loose when you tear down an engine

 

[tundrabeagle3]

spark plug is clean and dry. i made sure the dots were lined up on the gears before i put it back together. I have pulled the pull start for at least an hour with the choke on and it still wont start.

 

[tundrabeagle3]

is their a right or wrong way to install cam shaft other than making sure the dots line up? and are the lifters both the same size?

 

[klicky96]

Is there any compression in the engine? When you pull, does it feel like there is something holding it back a little or does it spin freely?

 

[tundrabeagle3]

yea theres compression at times it sounds like its about to start but never does

 

[Pellethuntr]

The piston has to be top dead center in the cylinder when the dots are aligned on the cam shaft otherwise your timing will be screwed up

 

[klicky96]

The piston has to be top dead center in the cylinder when the dots are aligned on the cam shaft otherwise your timing will be screwed up

With the design of the crankshaft and cam shaft, there is no possible way the piston could not be in the right position while the dots are aligned.

 

[klicky96]

Check for a killswitch and/or check the coil wire(the kill switch wire) and make sure it's not grounded out. Check for a spark first. Stick a screwdriver into the plug wire, ground it out on the block and see if it sparks.

 

[jamyers]

is their a right or wrong way to install cam shaft other than making sure the dots line up? and are the lifters both the same size?

If the dots are lined up then you're good on the cam timing.

The lifters could be different lengths, depending on how the valve lash was set. Usually the valvestem gets ground down, but sometimes the lifters get shortened - if so, and if you swapped them around, then yes your valve clearances would be off. Easiest way to check is pull the breather / side cover off and measure valve lash. Piston needs to be at or just past TDC of the compression / firing stroke (both valves closed).

 

[Pellethuntr]

With the design of the crankshaft and cam shaft, there is no possible way the piston could not be in the right position while the dots are aligned.

I guess it would depend on the year and model.. I have a briggs 7 horse that I lined the dots up perfectly only to find out that the timing was off.. Then I was told by a certified small engine mechanic that the piston has to be at the top of the cylinder when the dots align or timing will be off.. I did this and it fixed my problem.. I am not saying they are all like that but since we don't have his engine to look at we have to give ideas that haven't been tried yet

 

[tundrabeagle3]

its not the wire being grounded because i cut it off the kill switch. I think its the timing because i didnt have the piston at tdc when i matched the dots. i had matched them side by side. And i did notice that one of my lifters was not being pushed up by the cam shaft. My lifters are both the same size.

 

[brandongeiger2]

its not the wire being grounded because i cut it off the kill switch. I think its the timing because i didnt have the piston at tdc when i matched the dots. i had matched them side by side. And i did notice that one of my lifters was not being pushed up by the cam shaft. My lifters are both the same size.

Are the push rods moving? i bet one of your tappets stuck the the block when you put it in...when i push in tappets i always push them up enough to stick them to the top(unless its a flatheat engine) so they dont fall when installing the cam than i push them back down on the lobes of course.

Also like someone else said you can't mess up the timing if you match the dots up just think logically theres one dot(only one place the piston could be when matched up). If the engines cam was driven by a chain that would be correct though.

 

[kendelrk]

take off your valve cover. never been in one from a briggs so ill use clone knowledge to my extent. the rocker arms may have moved to the left and the push rods not being touched. to fix, open back up and take out cam. pull both lifters and push rods out and put the rocker arms back sitting vertical. now insert your push rods until they hit your rocker arms and put the lifters back in. keep the valve cover open and insert your cam. when you think your lined up spin the crankshaft twice. if off timing the dots wont line up after the rotation. make sure your exhaust and intake valve or moving, put her back together and give her a try

 

[klicky96]

If this thing isn't even makin a fire, it could be many things. It could be just a braised wire off of the coil, or it could be the cam position. No one is wrong here, they're all just possibilities.

 

[Doc Sprocket]

Sorry- accidentally inserted wrong quote. Above post shot and killed.