The Jack's Small Engines Forum - Join Our Online Community
Reply to post

Hot!Briggs&stratton15A114 0697 E1 timing problem

Author
Hande
Starting Member
  • Total Posts : 8
  • Scores: 0
  • Reward points: 0
  • Joined: 2019/01/19 14:52:36
  • Status: offline
2019/01/19 15:33:11 (permalink)
0

Briggs&stratton15A114 0697 E1 timing problem

Hi, i changed a piston to my engine, and now it runs poorly. Pistons arrow points to flyweel. Exhaust pipe spits fire and goes red. When i put shoke it spits even more fire. Engine has no torque power. I wondering if the timing had gone wrong. I aligned the marks from cranksaft and camsaft, (cranksaft small mark and camsaft small square) are they ok? Valve adjustment is ok. Cannot place a foto.

12 Replies Related Threads

    AVB
    Super Member
    • Total Posts : 922
    • Scores: 37
    • Reward points: 0
    • Joined: 2017/06/21 16:35:48
    • Location: Elora, TN
    • Status: online
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/19 16:00:40 (permalink)
    0
    Check for sheared or partially sheared flywheel key. If the date code is between 100830xx and 101216xx then replace 796335 steel key. Torque flywheel to 105-115 ft lbs.
     
    Hande
    Starting Member
    • Total Posts : 8
    • Scores: 0
    • Reward points: 0
    • Joined: 2019/01/19 14:52:36
    • Status: offline
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/20 03:24:51 (permalink)
    0
    Flywheel key looks fine.
    AVB
    Super Member
    • Total Posts : 922
    • Scores: 37
    • Reward points: 0
    • Joined: 2017/06/21 16:35:48
    • Location: Elora, TN
    • Status: online
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/20 04:59:01 (permalink)
    0
    From what I can tell these are the timing marks on the crank and cam. Other than that I don't know what else it can be unless you have the exhaust valve clearance too tight which should be .009 -.011". I have seen one these engines personally so just going what Briggs reference info I can find. Snowblower engines are just not here in the Southeast. Maybe Roy has seen one.
     
    Also since it has plastic gear camshaft check to see if it might have shifted. The image below should help on that.

    Hande
    Starting Member
    • Total Posts : 8
    • Scores: 0
    • Reward points: 0
    • Joined: 2019/01/19 14:52:36
    • Status: offline
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/20 07:30:34 (permalink)
    0
    Thanks, i will check the valve clearance again. That what i thinking if the timing is 180 degrees wrong...
    Luckily in northern Finland is -31F, so its not snowing😀
    AVB
    Super Member
    • Total Posts : 922
    • Scores: 37
    • Reward points: 0
    • Joined: 2017/06/21 16:35:48
    • Location: Elora, TN
    • Status: online
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/20 08:54:19 (permalink)
    0
    Hande
    Thanks, i will check the valve clearance again. That what i thinking if the timing is 180 degrees wrong...
    Luckily in northern Finland is -31F, so its not snowing😀

    Actually on a 4 cycle single cylinder it impossible to get one 180 degrees out of time but many novices do think that they can. You however get out of time by a tooth or more one way or the other when aligning the timing marks and the engine still run. Not intentional but it happens. Will not run good except in a few cases. I once intentionally put a Briggs 12.5hp L-head out by one tooth and actually had better running engine but that is rare.
     
    The reason you can't get the cam out by 180 is that the crankshaft to camshaft ratio is exactly 2 to 1 turns. Otherwords the crankshaft makes two complete turns to every one complete turn of the camshaft. This means that every other crank rotation it will appear that cam is out by 180. Now with multiple cylinder engine with distributors you can get the ignition timing out by 180 or any other degree. I have done it but was because you can't see the camshaft timing mark when the engine is together and must time the distributor by the crankshaft timing mark on the harmonic balancer. Most single cylinder engines like the Briggs uses a magneto system with wasted spark so the engine fires once every full turn of the crankshaft.
    Hande
    Starting Member
    • Total Posts : 8
    • Scores: 0
    • Reward points: 0
    • Joined: 2019/01/19 14:52:36
    • Status: offline
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/20 09:10:01 (permalink)
    0
    "Most single cylinder engines like the Briggs uses a magneto system with wasted spark so the engine fires once every full turn of the crankshaft." Yes thank you, this is the thing i been wondering
    Roy
    Moderator
    • Total Posts : 638
    • Scores: 15
    • Reward points: 1
    • Joined: 2016/07/27 22:51:23
    • Location: British Columbia
    • Status: offline
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/20 11:56:43 (permalink)
    0
    You can easily check cam timing with the head off. Rotate the flywheel until the exhaust valve is closing as the intake opens, this is valve overlap. It should happen at top dead center.
    AVB
    Super Member
    • Total Posts : 922
    • Scores: 37
    • Reward points: 0
    • Joined: 2017/06/21 16:35:48
    • Location: Elora, TN
    • Status: online
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/20 14:08:49 (permalink)
    0
    Should be able check without removing the head; just the valve and the spark plug. No need to destroy a good head gasket. By using a dowel rod thru the spark plug hole to feel the piston TDC and watching the rocker arms for the overlap. Just be careful not break off the dowel rod because if you do then head does need to come off to get the broken piece out.
    Hande
    Starting Member
    • Total Posts : 8
    • Scores: 0
    • Reward points: 0
    • Joined: 2019/01/19 14:52:36
    • Status: offline
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/28 11:02:50 (permalink)
    0
    Engine still running poorly. I been triple check everything. Engine has ~9-10 kg/cm2 compression. What is the purpose that compression release thing? I wondering if its not working as it should, and opens exhaust valve in wrong time. What happens if i remove that system?
    Hande
    Starting Member
    • Total Posts : 8
    • Scores: 0
    • Reward points: 0
    • Joined: 2019/01/19 14:52:36
    • Status: offline
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/28 11:56:43 (permalink)
    0
    I think i found the problem. Exhaust cam may be turn a little.
    AVB
    Super Member
    • Total Posts : 922
    • Scores: 37
    • Reward points: 0
    • Joined: 2017/06/21 16:35:48
    • Location: Elora, TN
    • Status: online
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/28 13:01:21 (permalink)
    0
    Hande
     What is the purpose that compression release thing? What happens if i remove that system?

    On recoil starter systems it makes easier to start as full compression will usually kick back pulling the rope back in and out your hand. Many times the operator can end up with sprain fingers or worst. An a 13hp Honda got quite kickback and left me out of commission for nearly a month because of a fail ACR.
     
    On electric starter versions it lower the compression so less expensive starter cam be used by the OEM. When it fails increase by quite the starter load and current draw. On say a Briggs 310000 series the with a fail actually just make to the compression and stops. Many owners then replaces the battery and starter thinking they are the root of the problem. Also higher than normal current load will burn starter solenoids.
     
    So if you simply remove it then you will have starting problem caused by the increase compression.
     
    With the compression nearing 135+ psi it does looks like the ACR has failed already as you should be seeing around 70 psi at starting speeds.
    Hande
    Starting Member
    • Total Posts : 8
    • Scores: 0
    • Reward points: 0
    • Joined: 2019/01/19 14:52:36
    • Status: offline
    Re: Briggs&stratton15A114 0697 E1 timing problem 2019/01/28 13:17:28 (permalink)
    0
    Compression was 135psi when i use electric starter. Well, i'll be back after i received new camsaft and teki if the problem was it.
    Jump to:
    Copyright © 1994 - 2016 Jacks Small Engine & Generator Service, LLC