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JD LA110 lawn tractor with briggs engine cranks over with spark plug removed, Plug installed locks up when cranking ,

Rotate by hand past lock up spot and engage starter engine will fire and run good Battery test good. Any way to check starter ?

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Probably not the starter unless there is a bent pinion shaft in the starter, damaged ring gear teeth or something in the ring gear teeth
turns over good with the plug removed indicates incorrect plug in use and it is protruding into the cylinder and the piston is hitting the plug
the tread of the plug should be the same length as the thread in the head

Posted on May 04, 2017


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Posted on Jan 02, 2017


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I have a petrol golf cart wont start

Brian, If engine is of overhead valve type and engine turns over with plug out and will not crank when plug in or turns very slow, the problem is probable valve adjustment required or decompression release faulty on cam shaft. Check the attached links,instruction and guides, Good luck
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Aug 16, 2016 | Cars & Trucks

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My 2002 envoy engine locked up while it was parked????

It can happen. Usually caused from the oil being low or going low to many times. When it cools down, the bearing will seize on the crank shaft. Also seen the A/C compressor lock up and keep the engine from turning. Both can be checked.

Nov 27, 2015 | Cars & Trucks

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You have to make sure the shaft to the oil pump is engaging the bottom of the distributor gear. Hand turn the engine until the #1 piston is top dead center and the timing mark on the crank dampener is aligned with the zero mark. Them position the distributor so the rotor is pointing to the #1 spark plug wire on the cap. then tighten the mount bolt lightly so you can still rotate the distributor. Use a timing light to set the timing then lock down the mount bolt.

Aug 21, 2014 | Cars & Trucks

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Need firing order on 96 Chevy Silverado and how to place the distributor




To Remove
  • Disconnect the distributor wiring connector and the vacuum advance hose, if the vehicle is so equipped.
  • Remove the distributor cap and note the position of the rotor. Mark the position on the distributor housing.
  • On some vehicles, it may be necessary to remove the spark plug wires from the cap prior to cap removal.
  • Note the position of the vacuum advance, then remove the distributor holddown bolt and clamp.
  • Pull the distributor from the engine. Most distributors will need to be twisted as they are pulled out of their bore.
  • Once the distributor is removed, install a shop towel in the distributor opening to keep foreign material out of the engine block.
  • The entire assembly should be cleaned thoroughly. Make sure all solvent residue is completely removed.
Installing and Timing a Distributor
The following procedure may be followed to install the distributor and time it to the engine, if all reference marks were made during the removal of the distributor:
  • Lubricate the O-ring on the distributor shaft.
  • Position the rotor so that it is aligned with the mark made on the distributor housing prior to removal.
  • Align the distributor housing with the mark made on the engine block during removal.
  • Lower the distributor into the engine block, making sure the distributor drive is fully seated.
  • Distributors equipped with a helical drive gear will rotate at the distributor is being installed, causing the distributor to move away from the reference marks.
  • Pay attention to how much the rotor moves.
  • Remove the distributor and move the rotor backward the same amount. This should allow the shaft to rotate while the distributor is being installed and still be aligned with the reference marks.
  • Make sure the distributor housing is fully seated against the engine block. Sometimes it may be necessary to wiggle or rock the distributor to seat it fully into the drive gear.
  • Distributors with drive lugs must be mated with the drive grooves in the camshaft. Both are offset to eliminate the possibility of installing a distributor 180 degrees out of time.
f22-52.gif The distributor must be aligned with the camshaft drive to seat the distributor in the engine block or cylinder head.
  • Rotate the distributor a small amount so the timer core teeth and pick-up teeth are aligned.
  • Install the distributor holddown clamp and bolt, leaving the bolt slightly loose.
  • Install the spark plug wires in the direction of distributor shaft rotation and in the cylinder firing order.
  • Connect the distributor wiring connectors. The vacuum advance hose is usually left disconnected until the timing is set with the engine running.
If the engine has been cranked while the distributor is removed, or no marks were made during removal, use this procedure to reinstall the distributor:
To be sure that the number one cylinder is on its compression stroke, observe the rocker arms to see that they are both moving. Then, rotate the crankshaft one revolution until the rocker arms for the companion to cylinder number one are both moving at TDC (top dead center). Align the timing mark and install the distributor with its rotor pointing to the number one spark plug cable in the distributor cap.
  • Remove the spark plug from cylinder #1. Install a test plug in the end of the spark plug wire and position the test plug away from you and cylinder #1.
  • Place your thumb over the bore for the spark plug and crank the engine until compression is felt.
  • Lightly crank the engine while observing the timing marks on the crankshaft pulley. Once the timing marks are aligned, stop cranking.
  • Identify the position for the #1 spark plug wire on the distributor cap.
  • Determine which way the distributor shaft will rotate when it is lowered onto the camshaft gear. Then position the rotor so that it will be under the #1 terminal on the distributor cap after the distributor gear is meshed with the camshaft gear.
  • After the distributor is installed in the engine, turn the distributor housing slightly so the pickup coil is aligned with the reluctor.
  • Install the distributor holddown clamp and bolt. Hand tighten the bolt.
  • Connect the pickup leads to the wiring harness.
  • Install the spark plug wires onto the distributor cap according to the engine's firing order. Check to make sure everything that was disconnected before the distributor was removed, is now connected. Connect a timing light and prepare the engine for an ignition timing check and adjustment.

Feb 17, 2013 | Cars & Trucks

1 Answer

I bought a 97 safari 4.6 awd. It sat for a few years. They said they fixed the lifter. I had to put the intake manifold back on the engine. I went to start it, and it won't even crank. I can manually...


Nov 08, 2011 | 1997 GMC Safari

1 Answer

I replaced the spark plugs, gaped at .35, replaced wiring, took each wire and replaced from the one I replace so the firing order should be correct, replaced the cap and rotor. The had been running before...

If the engine is balking or kicking back while you are cranking it over, chances are you may still have gotten the wires on the cap wrong. You may have the correct order but started in the wrong spot.
Take a drinking straw and put it into the #1 plug hole (don't let it fall in) and rotate the engine by hand 'till the timing mark on the front pulley lines up with the "0" on the timing scale and the straw is at it's highest position. Look at the rotor. it should be pointing roughly at the R/F headlight. Mark the position with a crayon etc on the outside of the housing and replace the cap. That is the #1 plug wire position...the remainder of the wires are installed in the same direction the rotor turns...153624 or 18436572 (if 8cyl). If the rotor points 180 degrees away from where I said, turn the engine one more revolution.

Feb 28, 2011 | Jeep Cherokee Cars & Trucks

1 Answer

Describe your how fix my pontiac 2000 montana Problem changing spark plugs


Inspect for the correct routing of the spark plug wires. Improper routing may cause cross-firing. Inspect each wire for any signs of cranks or splits in the wire. Inspect each plug wire boot for tearing, piercing, arcing, carbon tracking or a corroded terminal.
If there is any corrosion, carbon tracking or arcing indicated on a plug wire boot or terminal, both the plug wire and component it was connected to should be replaced.

Removal & Installation

3.5L Engine

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove the left side spark plug wires from the spark plugs.
  3. Remove the left side plug wires from the retaining clips.
  4. Rotate the engine for access as follows:
    1. Set the parking brake.
    2. Shift the transaxle into neutral.
    3. Remove the engine mount strut bolts. Swing the engine mount struts aside.
    4. Install the Engine Tilt Strap J-41131.
    5. Pull on the engine in order to rotate the engine forward.
    6. Tighten the strap.

  5. Remove the right side spark plug wires from the spark plugs.
  6. Remove the plug wires from the retaining clip.
  7. Remove the spark wires from the ignition coils.
  8. Remove the plug wire assembly from the engine.
    NOTE If you are replacing the spark plug wires, the spark plug wire conduit and retaining clips should be transferred to the replacement wires.

To install:
  1. Install the right side plug wires to the ignition coils and then the spark plugs.
  2. Install the spark plug wires to the retaining clip.
  3. Rotate the engine back to the original position.
  4. Install the left side spark plug wires to the ignition coils and then to the spark plugs.
  5. Install the spark plug wires to the retaining clips.

3.9L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove the intake manifold cover.
  3. Remove the left side spark plug wires as follows:
    1. Disconnect the left side spark plug wires from the spark plugs.
    2. Disconnect the left side spark plug wires from the ignition coil.
    3. Remove the left side spark plug wire clips from the intake manifold and heater inlet and outlet pipe.
    4. Remove the left side spark plug wire assembly.

  4. If removing the right side spark plug wires, the engine must be rotated for access as follows:
    1. Set the parking brake.
    2. Shift the transaxle into neutral.
    3. Remove the engine mount strut bolts. Swing the engine mount struts aside.
    4. Install the Engine Tilt Strap J-41131.
    5. Pull on the engine in order to rotate the engine forward.
    6. Tighten the strap.

  5. After rotating the engine, remove the right side spark plug wires as follows:
    1. Disconnect the right side spark plug wires from the spark plugs and ignition coil.

  6. Remove the right side spark plug wire clip from the ignition coil bracket.
  7. Remove the right side spark plug wire assembly.

To install:
  1. Install the spark plug wire assembly.
  2. Install the right side spark plug wire clip at the ignition coil bracket.
  3. Connect the plug wires to the ignition coil and spark plugs.
  4. If the engine was rotated for access, return the engine to the original position.
  5. The remainder of the installation is the reverse order of removal.

Feb 05, 2011 | 2000 Pontiac Montana

1 Answer


First you need to turn the engine over by hand (Socket on the crank pulley) until the arrow points to the zero. (Top dead center) Now keep in mind that while turning it clockwise facing the engine, you remove the number one spark plug, (Drivers side front) and just before you are at zero, you should feel air pressure with your finger in the spark plug hole.
If you dont, rotate the crank one more time. (This happens every other turn of the crank.)
Now remove the cap, and your rotor should be pointing at the number one spot for the plug wire.

Jul 19, 2010 | Chevrolet C2500 Cars & Trucks

2 Answers

1999 ford explorer has oil,but the engine acting likes it's locked up

Remove the serpentine belt and try to rotate the engine by hand. Take the spark plugs out and try to rotate the engine by hand. If it has an automatic tranmission disconnect the flexplate bolts and try to rotate the engine by hand. If no no luck the engine is seized somewhere and will need replaced or overhauled.

Apr 08, 2010 | 1999 Ford Explorer

2 Answers

Cranks but wont start

Engine Cranks But Will Not Start

For an engine to run, you need three things to happen inside the engine. Compression, fuel and ignition, without any one of these components the engine will not run.
Basic Checks:

A. Test Fuses. Test both under hood power distribution center and the fuse panel under dash. This is done with a test light tool. The test light should illuminate on both sides of the fuse, if not the fuse has failed and needs to be replaced.
B. Testing Fuel Pressure Test for proper fuel pressure with a test gauge on the fuel rail, most throttle body injection cars (TBI) are between 13 psi and 17 psi. and most (DPI) direct port inject systems are between 40 psi and 55 psi. If no or little fuel pressure is observed and there is 12 volt power present the fuel pump, the fuel pump needs replacing.
C. Checking Timing Belt Test for compression by removing a spark plug and insert a compression gauge. Crank the engine over about 5 seconds the gauge should read between 125 psi and 165 psi, if no compression is observed remove front engine cover to inspect timing belt or chain. Crank engine to observe cam rotation, if the cam does not rotate the timing belt or chain has failed. (note: if the timing belt drives the water pump it is best to replace the water pump at this time)
D. Test for Injector Pulse Remove injector connector to insert injector test light (node) or volt meter. Observe light flash or gauge pulse while cranking. If light/voltmeter doesn't respond, an ignition distributor/crank angle sensor (CKS) or an ignition module is most likely your problem.
E. Test for Ignition Spark Remove spark plug wire, insert an extra spark plug into end of wire, rest spark plug next to a ground source then crank engine. You should observe a blue spark between the spark plug gap and ground source. If no spark is observed, an ignition coil, ignition rotor or spark plug wires might have failed. (always keep hands away from engine when cranking)

Jul 14, 2008 | Hyundai Motor 2002 Sonata

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