Question about Chevrolet 2002 Chevrolet Silverado 1500 Base

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What's the steps in replacing my 5.3 engine?

# 7 cylinder has a hole(chunk) in it. I'm thinking I could just replace the 1 piston with it still in truck. I can't find a reasonable used 5.3. Cost wise would help me out a lot. I might get what another 5,000 or so miles. I thought was head gasket and bought a set. I hadn't took heads to machine shop yet ($250, $50 ring set compared to $1300 used motor. I need some advice on this decision please. I know won't last long but it should get till beginning of next year.

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  • Chevrolet Master
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You would need to drop the oil pan to remove the con rod bolts to be able to remove the piston. Sounds like you have the heads off. You would then pull the piston out drop a new one in (will need a piston ring compression tool) reconnect and torque the con rod. Reinstall heads and other xompnenets. Not sure how long or even if it will run as there could be other damage.

Posted on Oct 07, 2016

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Posted on Jan 02, 2017

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1 Answer

Falcon is not firing on no.1


Assuming it is getting fuel to the cylinder, and the ignition timing is correct.....

1. Check for spark. (could be a bad spark plug). I have seen plugs that will fire outside of the cylinder, but not when installed. check carefully.
2. If there is spark, get a compression tester. remove the spark plug, replace with the tester, crank the engine a few revolutions. record the reading.
3. Remove the tester and squirt some oil into the cylinder, replace tester and crank engine again - record the result.
4. If step one reads zero...you have a burned exhaust valve or a hole in the piston, unless it is a blown head gasket which usually means there is water in the oil or visa versa. Or...if the head gasket is blown between cylinders, (no oil in water or water in the oil), then you need to do step 1 on the cylinder next to the bad cylinder. It should have a low or zero reading also.
5.If step 1 is a low reading (not zero) and step 2 INCREASES the reading. This means the rings for that cylinder are worn out and the engine should be overhauled.
6. If step 2 does not increase the reading of step 1 and it remains low (not zero), this indicates a leaking or partially burned exhaust valve.

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Inin engine block what is piston number sequence


Looking from the front the closest cylinder to you is number 1 then 3 behind it then 5 then 7 if a v8

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Timing went out .how to fix it


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P 2647"A" Rocker Arm Actuator


Your going to need a air pressure regulator or better yet if the ECM found fault price it and replace it
  1. Start the engine, and let it run for 5 minutes, then turn the ignition switch to LOCK (0).
  2. Remove the cylinder head cover.
  3. Set the No. 1 piston at top dead center (TDC).
  4. Move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A should move independently of the secondary rocker arm B.
    1. If the intake secondary rocker arm A moves freely, go to step 5.
    2. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, then check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.
    3. Repeat step 4 on the remaining intake secondary rocker arms with each piston at TDC. When all the secondary rocker arms pass the test, go to step 6.
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    5. Inspect the valve clearance.
    6. Install a 10 x 1.0 mm adapter to the inspection hole, then connect the air pressure regulator
  5. With the specified air pressure applied, move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A and secondary rocker arm B should move together. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, and check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.
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1 Answer

I have a Chevy 2500 pick up truck. My son thought he'd replace the spark plugs. He removed the distributor cap, didn't understand it and now the truck won't start. He did not replace any spark...


firing order for 5.7 v8 is 1-8-4-3-6-5-7-2 mostly all of the chevy v8s are the same firing order. the rotor button in distributer turns clockwise, the cylinder numbers are 1-3-5-7 on drivers side, 2-4-6-8 is on passengers side. To get started get your distrutor cap[new one] look on the top you will see a #1that's where you begin you must know if if rotates clockwise or counter clockwise start in that direction then follow the firing order and cylinder line up. good-day!! if cap is not marked, just pull out #1 plug, put a straw or similar in plug hole on top of piston. turn engine over by crank in front of vehicle with a wrench, when the piston comes to the very top just before it starts going down. this is tdc. and rotor button should be pointing to #1 wire on dist, cap. follow from there. good-day !!

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1 Answer

Correct pressure for torque the head of mazda pickup 1998


Since you didn't say which engine you have, I've pulled torque specs for 3 different engines. Also, since I can't include a diagram showing the relative locations of the numbered head-bolt locations, it would be a good idea for you to purchase a vehicle specific repair guide that will show this info.


Take particular note about the TTY (Torque to Yield) bolts used on 2 of the 3 engines shown. It is said that new head bolts MUST BE USED when head is replaced or re-installed to obtain the proper torque.



B2500 4 Cylinder

Torque sequence: --------- ' 10 6 2 4 8 ' front ' ' ' 7 3 1 5 9 ' -----------Step 1: torque in sequence to 51 Ft/Lbs Step 2: torque again in sequence to 51 Ft/Lbs Step 3: final tighten all bolts an additional 90 to 100 degrees recheck final torque in sequence *** CAUTION ***engine uses Torque To Yield head bolts (TTY) that permanently stretch during the initial installation. New head bolts must be used when cylinder head is replaced or re-installed to obtain proper torque.







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Torque sequence ---------- ' 6 4 2 8 ' ' ' ' 5 1 3 7 ' ---------- Step 1: torque to 59 Ft/Lbs Step 2: loosen in sequence (1) full turn Step 3: torque to 41 Ft/Lbs Step 4: torque to 73 Ft/Lbs









B4000 4.0 6 Cylinder

Torque sequence --------- ' 5 1 3 7 ' ' ' ' 6 4 2 8 ' --------- Step 1: torque cylinder head bolts in sequence to 26 Ft/Lbs Step 2: torque cylinder head bolts to 56 Ft/Lbs Step 3: turn cylinder head bolts in sequence an additional 90-degrees recheck final torque in sequence *** CAUTION ***engine uses Torque To Yield head bolts (TTY) that permanently stretch during the initial installation. New head bolts must be used when cylinder head is replaced or re-installed to obtain proper torque.


Good luck with this job!

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1 Answer

How do you check the firing order on a chevy small block engine ?


Firing order for small block chevy is 1-8-4-3-6-5-7-2. The cylinders are numbered 1-3-5-7 on the driver's side of the engine counting front to back. Passenger side is 2-4-6-8, front to back. You will need to get #1 cylinder at top dead center on the compression stroke. To do this, remove the #1 spark plug and remove the coil wire from the distributor cap. You will need a helper for the next step. Place your index finger in the empty spark plug hole, Have your helper bump the starter with the ignition key, When #1 cylinder comes up on the compression stroke, the pressure will push your finger away from the spark plug hole. Don't worry, this doesn't hurt. Turn the key off. Check the timing mark on the harmonic balancer behind the crankshaft pulley. It should be pretty close to lining up with the "0" timing mark on the pointer attached to the engine block. Now pull the distributor cap and see where the rotor cap is pointing. This will be #1 on the distributor cap. The spark plug wire from the #1 plug will occupy that position. The next position on the distributor cap will be for the plug wire coming off the #8 cylinder. The rest of the plug wires will attach to the distributor cap in the above mentioned firing order counting clockwise. If you do not wish to place your finger in the #1 spark plug hole, you can use a piece of paper towel roll up and stuck in the hole just enough to form a seal. When the piston comes up on the compression stroke it will force the paper towel out. Any questions, just let me know.

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1 Answer

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2. Piston rings worn past service limits.
3. Damaged cylinder wall or piston.
4. Valves and guides worn past service limits.
5. Valve seals worn out, crushed or no longer attached.
6. Cracked cylinder head.
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8. Pinched or blocked crankcase breather hose.
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1 Answer

I have to put the plug wires back on the distributor.


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