Replacing the timing belt?

Good evening,

This sounds like the timing. The belt may have moved and changed the valve timing. I attached pictures of the alignment marks for you to review. Check out the diagrams (Below).

I also attached a you tube video for you of setting up the gears so the belt is in the correct location after the tensioner is set.

https://www.youtube.com/watch?v=YTgusM6S0GM

If the belt is off at the crankshaft and the distributor and the cam are in time, the truck will lack power. You can verify by performing a compression test. If the valve timing is off, the compression will be low. It needs to be about 140-150 pounds.

https://www.2carpros.com/articles/how-to-test-engine-compression

The plate you refer to can only go on 1 way. It fits over a keyway on the crank so it cannot move left or tight.

NOTE: Care must be taken during timing belt installation to prevent damage to the inner timing cover.

1. If not done:
a. Loosen tensioner adjusting bolt.
b. Using Camshaft Belt Tension Adjusting Tool, pry tensioner CLOCKWISE against spring tension as far as possible.
c. Tighten adjusting bolt to hold tensioner in RELEASED position.

2. Align crankshaft so number one piston is at Top Dead Center (TDC) with crankshaft key pointing straight UP and circle on crankshaft sprocket aligned with notch in engine front cover.
3. Align triangle on camshaft sprocket with triangle on inner timing belt cover.
4. Align diamond on oil pump sprocket with diamond on inner timing belt cover.
5. Install timing belt over crankshaft sprocket. Then, proceeding COUNTER-CLOCKWISE, over oil pump sprocket and camshaft sprocket.
6. Loosen tensioner adjusting bolt allowing tensioner pulley to press against timing belt.

NOTE: When performing the following step, DO NOT ROTATE crankshaft COUNTER-CLOCKWISE as timing belt may jump a cog, putting camshaft or camshaft position sensor on oil pump out of time.

7. ROTATE crankshaft two revolutions CLOCKWISE.
8. Bring crankshaft slowly, without stopping, to number one cylinder firing position (keyway directly UP).
9. Recheck timing mark alignment. Repeat steps if timing marks are not properly aligned.
10. ROTATE tensioner assembly against belt with torque wrench up to 41-45 N.m (30-33 lb-ft) and tighten adjusting bolt.
11. Tighten adjusting bolt to 35-45 N.m (26-33 lb-ft).
12. Tighten spring pivot bolt to 40-55 N.m (30-40 lb-ft).
13. Install outer timing belt cover.

Check out the diagrams (Below). Please let us know what happens.

Position the no.1 piston on its compression stroke/TDC then line the sprockets-see below

There is pic of tming marks for your truck also install with torque specs.

Check connection to make sure it's in correct and tight. Make sure your timing marks are aligned as pictured. And what codes were they?

Not left handed i'm afraid. Just stubborn. You could try warming around it a little. To expand pulley. Or impact gun?

TIMING BELT

Removal
Remove spark plugs. Ensure crankshaft is set at TDC, and camshaft sprocket timing mark and oil pump sprocket timing mark are aligned with inner cover timing marks. See Fig. 1. Remove fan guard. Remove fan shroud and position aside. Remove fan retaining screws, and remove fan and shroud. Rotate drive belt tensioner and remove belt.
Remove cooling fan and water pump pulley. Discharge A/C system (if equipped) using approved refrigerant recovery/recycling equipment. Remove A/C compressor and position aside. Remove A/C compressor mounting bracket with power steering pump attached, and position aside.
Remove timing belt outer cover retaining bolt. Release 7 cover interlocking tabs. Remove timing belt cover. Holding timing belt tensioner with Camshaft Belt Tension Adjuster (T74P-6254-A) or equivalent, loosen adjusting bolt and slowly release tension. See Fig. 2. Pry tensioner away from timing belt and tighten bolt to hold tensioner in place. Remove timing belt.

Hi there,

This will be a right handed thread, Try removing the starter and locking up the fly wheel with a suitable lever, this will lock the motor, you may need an assistant to help you, the crank shaft bolt will be extremely tight.

Mark (mhpautos)