Question about 1998 Chevrolet K2500

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Replacing distributor in 1998 chevy k2500?

I am replacing the distribor in my 1998 K2500 5.7 V8 do I need to set at TDC?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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yotaguy
  • 232 Answers

SOURCE: need Rear Brake Diagram for 1994 Chevy K2500 4x4

Here is the diagram,It is always a good idea to only disaasemble one side so you can use the other side as a reference,I also reccomend using a set od brake pliers,they will the disassembly and reassembly much easier.
0900c1528008f6a2.gif

Posted on May 30, 2009

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seans46
  • 161 Answers

SOURCE: Timing problem

you need tdc compression stroke when you turn the motor and it puffs when 1# is up thats the one you need. then put #1 on the cap where its pointing. but you will hear and feel the comp stroke tdc

Posted on Jun 10, 2009

  • 491 Answers

SOURCE: What is the distributor timing mark for 89 chevy

Is the vacuum hose removed from the dist when the timing is being checked?
Are you connected to the first plug wire (closest to the rad) on the drivers side?
If this is being done.....remove the cap and rotor and check the springs on the mechanical advance,the advance should be tight to the shaft and springs tight.
I would set the base timing on this set up .....at idle speed...... at between 5 and 10 before TDC.

Remember......timing marks on modified engines are not always accurate. Parts from this year and that year put together.

Posted on Sep 01, 2009

c7121
  • 160 Answers

SOURCE: Timing on 1998 Chevrolet Astro

WHILE THE ENGINE IS RUNNING, TURN THE DISTRIBUTER CLOCKWISE OR COUNTERCLOCKWISE UNTIL IT STARTS TO IDLE SMOOTHLY. GET A TIMING LIGHT AND TIME THE ENGINE.

Posted on Dec 29, 2009

larrymatthew
  • 318 Answers

SOURCE: 1989 Chevy K2500 350 will not restart after warmed

tdc is usually set at 8 degrees BTDC for an automatic and 4 BTDC for a manual transmission. This may help. Does the engine run rough at start up being set at 0TDC?

Posted on Nov 18, 2010

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2 Answers

Why wont my 1998 astro van start?


With the engine at #1 TDC your rotor bug should be pointing at your #1 plug wire.

Jul 24, 2014 | 1998 Chevrolet Astro Van

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Just changed spark plug wires, distributor cap and rotor in my 1995 chevy truck 1500. Not is doesn't start. Maybe I switched wires when replacing old wires??


firing order on chevy v8 is 1-8-4-3-6-5-7-2 number one cyl is ft left of engine left side being 1-3-5-7 from ft to rear 2-4-6-8 right side ft to rear

Aug 31, 2013 | 1995 Chevrolet K2500

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1996 chevy c1500 5.7. i replaced the lower intake gasket. now with it all put back together it wont start. i took the distributor out and set the motor to TDC and set the distributor to the #1 cylinder....


You need to pull the distributor back out, put motor to TDC
now you say its always a tooth off...the timing chain may be alittle worn..so when you are trying to put the distribor back in ...put a socket or something... to move the crankshaft.....move it back and forth untill the distributor falls in....AT the number one plug on cap....
Hope this helps you out ??

Jul 07, 2011 | 1996 Chevrolet C1500

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I installed a engine in my 1998 Chevy S10 Blazer, but I made the mistake of not marking the distributor when I removed it because of damage to the electrical plug. Now, I can't seem to get the timing...


TDC, make sure both valves are closed. (Rotate the engine as it turns running, TDC is after the compression stroke, Number one piston up.)
Note that the distributor gear has a twist to it, and you need to compensate that when aligning the oil pump slot.

Jun 21, 2011 | 2000 Chevrolet Blazer

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1999 Blazer Distributor replacement. How do I find TDC with harmaonic balancer marks. I see two marks. One should be TDC compression and the other should be TDC exhaust. What mark do I need to align to to...


the best way to do it is to remove no 1 spark plug and get the eng on tdc of the compression stroke and one of the marks will line up.hope this helps.good luck.

May 13, 2011 | 1999 Chevrolet Blazer

1 Answer

Rebuilt my 454 engine, installed distributor with rotor at 0 TDC on #1 cylinder. Engine ran fine but ses light was on. Code was P1345-- disagreement between cam sensor and crank sensor. Scanner showed...


The ignition timing is not adjusted with a timing light or with the engine running, and to set the ignition timing follow these procedures.

There is a mark or notch on the distributor housing that the rotor should be pointing to when the engine is on TDC. (Top Dead Center) This "Static" timing is all that matters and the computer will be able to control the timing as long as the ignition rotor is in that position when the engine is at TDC.

1. Place the engine at top dead center.

2. Look under the distributor cap and find where the number one terminal runs under the distributor cap, and where that position on the distributor cap corresponds with the distributor housing, and it should match up to a mark or a notch on the distributor housing (usually has a #6 for 6 cylinder engines or a #8 for 8 cylinder engines) indicating the number one TDC alignment position.

3. With the engine on top dead center the ignition rotor should be pointing to the number one TDC alignment mark or notch that is on the distributor housing, if it is not then loosen up the distributor and turn the distributor until the ignition rotor is pointing to and aligned with the TDC alignment mark or notch on the distributor housing and then tighten down the distributor, the engine should now be "Static" timed. (The more precise that you are aligning the TDC alignment mark with the ignition rotor the better the engine will run, and it will be less likely that there will be a camshaft to crankshaft correlation problem)

If the distributor can not be turned enough to align the ignition rotor with the number one TDC alignment mark on the distributor housing, or the distributor does not set properly and will not allow the installation of the spark plug wires then the distributor is not installed correctly and is most likely a tooth off and it will need to be re-installed correctly. (The distributor should set like it is shown in the firing order diagram when it is properly installed)

Here is a firing order diagram to also help assist you.




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Oct 25, 2010 | 1998 Chevrolet K2500

1 Answer

1989 Chevy K2500 350 will not restart after warmed up? I have replaced Heads, reset timing 0 TDC new plugs, coil, cap, button, module and pick up coil. Engine starts cold runs great but will not restart...


tdc is usually set at 8 degrees BTDC for an automatic and 4 BTDC for a manual transmission. This may help. Does the engine run rough at start up being set at 0TDC?

Oct 20, 2010 | 1988 Chevrolet K2500

1 Answer

What is the distributor timing mark for 89 chevy


Is the vacuum hose removed from the dist when the timing is being checked?
Are you connected to the first plug wire (closest to the rad) on the drivers side?
If this is being done.....remove the cap and rotor and check the springs on the mechanical advance,the advance should be tight to the shaft and springs tight.
I would set the base timing on this set up .....at idle speed...... at between 5 and 10 before TDC.

Remember......timing marks on modified engines are not always accurate. Parts from this year and that year put together.

Sep 01, 2009 | 1989 Chevrolet Camaro

1 Answer

Timing problem


you need tdc compression stroke when you turn the motor and it puffs when 1# is up thats the one you need. then put #1 on the cap where its pointing. but you will hear and feel the comp stroke tdc

Jun 10, 2009 | 1985 Chevrolet Chevy

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