Question about 1999 GMC Jimmy

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Replacing distributor and I lost the position of the rotor and truck wont start... do I need to take #1 cyl to top? and the aline rotor?

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Yes,pull the spark plug,and put your thumb over the spark plug hole,bump the starter and watch for top dead center on harmonic balance,to come around,you should feel suction right before it gets to top dead center,Then stop,and turn the balance more until it gets to top dead center mark,and instal the distributor pointing at number one tower on the cap.

Posted on Nov 16, 2009

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The # 1 cylinder must be at TDC on compression stroke, u find this by removing #1 spark plug and feeling for pressure as the cylinder comes up to compression, then hand rotoate the engine so the TDC mark is lined up on the crank damper, at this point the distributor rotor must be pointed at #1 cap terminal.

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Yes, when cyclinder one is at top, the rotor should be pointing towards the #1 spark plug wire

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  • GMC Master
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Disclaimer: I am not a full time mechanic and I could not find this answer anywhere on the internet. But I did just replace my distributor on a 1996 Jimmy with a Vortec 4.3 liter. When I looked from the bottom of the engine I saw a pointer on the block (arrow). I used this to find TDC on number 1 cylinder. Afterwords, I noticed from the top that there is a "V" notch for alignment. My best guess is that if you use the arrow, use the first mark (my engine rotated clockwise). And if you use the notch, use the second mark.

As for the distributor, there is a square notch on the part that rotates (with the rotor removed) that must line up with the arrow on the distributor housing somewhere around the two o'clock position. Getting the oil pump slot to align with the tang at the bottom of the distributor can be tricky too. Good luck and hope this helps.

Posted on Nov 16, 2009

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1 Answer

1996 jeep Gc laredo 4.0 should the dist rotor point to #1 cyl at tdc


at tdc your rotor has to be pointed at five o' clock for the engine to start. first position the oil pump slot at 5 and 11 o"clock and when the distributor seats the rotor must point at 5 o clock. it will not be centered on the #1 cylinder position, but a little before.

Mar 04, 2013 | 1996 Jeep Grand Cherokee

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97 dodge stratus 2.5 car turns over but does not have spark. There is fuel. I replaced the ECM crankshaft position sensor.


I would start with the rotor and cap. I just worked on one and it was the distributor was bad.

If you need to remove it and rplace it heres how.

Distributor Removal and Installation REMOVAL
  1. Remove bolt holding air inlet resonator to intake manifold.
  2. Loosen clamps holding air cleaner cover to air cleaner housing.
  3. Remove PCV make-up air hose from air inlet tube.
  4. Loosen hose clamp at throttle body.
  5. Remove air inlet tube, resonator and air cleaner cover.
  6. Remove EGR tube.
  7. Remove spark plug cables from distributor cap.
  8. Loosen distributor cap hold-down screws and remove cap.
  9. Mark rotor position for installation reference, then remove rotor.
  10. Remove two harness connectors from distributor.
  11. Remove two sets of distributor hold-down nuts and washers from studs.
  12. Remove bolt and spark plug cable mounting bracket from top of distributor housing.
  13. Remove bolt and transaxle dipstick tube.
  14. Carefully remove distributor from engine.
INSTALLATION
  1. Install rotor on shaft.
  2. Position distributor in engine and ensure O-ring is properly seated on distributor. Replace O-ring if it is cracked or nicked.
  3. Carefully engage distributor drive with slotted end of camshaft. When the distributor is installed properly, the rotor will be in line with previously marked line on air intake plenum.
  4. If engine was cranked while distributor was removed, establish proper relationship between distributor shaft and No. 1 piston position as follows:
    1. Rotate crankshaft until number one piston is at top of compression stroke.
    2. Rotate rotor to No. 1 rotor terminal.
    3. Lower distributor into opening, engaging distributor drive with drive on camshaft. With distributor fully seated on engine, rotor should be under No. 1 terminal.
  1. Install distributor hold-down washers and nuts. Torque to 9 ft-lbs .
  2. Install spark plug cable bracket.
  3. Install two harness connectors to distributor.
  4. Install distributor cap.
  5. Install transaxle dipstick tube.
  6. Install EGR tube to intake manifold. Torque bolts to 8 ft-lbs .

Mar 06, 2011 | Dodge Stratus Cars & Trucks

2 Answers

I am trying to get TDC on #1 cyl 0n a straight 6 1982 Ford f150. Turning the crankshaft manually to reinstall the distributor,but the rotor does not move to my chalk line on the distributor. What might be...


Once you are at TDC, lift the distributor up just enough to disengage the gear and move it + or - to match the rotor with the #1 position on the distributor cap (mark the body of the dist. where #1 is located), then gently wiggle it back down into place, keeping in mind that the shaft of the distributor will turn as the gears engage. It will probably take a few attempts, but I'm certain you can get it.

Jan 19, 2011 | 1982 Ford F 150

2 Answers

Pulled distributor on 97 chevy truck v6 and cant seem to get it back in right! wont start! got it to top dead center many times! they say put rotor to cyl #1 but do they mean #1 in cap or face rotor to...


when the engine is a top dead center on cyl one put the distributor in so the rotor points to the no1 spark plug wire trminal on the cap try that let me know if it helps

Jan 16, 2011 | 1997 Chevrolet K1500

1 Answer

Pulled my distributor to change my intake manifold gaskets and the shaft turned before I could mark it. Do I need to move cylinder #1 to top dead center and move the shaft with the rotor bug on it until it...


get no 1 to top dead center in compression stroke the align the distributor to no i position,( hint the distributor should be pointing to no i cyl)

Apr 29, 2010 | 1993 Chevrolet C1500

2 Answers

I have a 1972 Jeep CJ5, 304 V8 somebody decided to take my distributor. I have a replacement but don't know how to install from scratch wires and all. When they say rotor should point towards #1 cylinder...


Hi:
What they mean is that the rotor should point towards the spot on the distributor cap that the #1 spark plug wire attaches to.

So the basic process is this:

It is easiest to do with all your spark plugs out, but at least remove the #1 spark plug. rotate the engine till the #1 piston is fully up on the compression stroke( TDC or top dead center) and verify the timing mark on your crankshaft pulley is where it should be. Then install the distributor with the rotor pointing to where the #1 spark plug wire hooks up to the cap. This will get you close to the final spot, and that will work for you. Just be carefull not to get it off one tooth on the distributor gear, as you might still think it is close, but the distributor will have to be rotated to the extreme adjustment to get the timing close.

Hope you get it back together!

Mar 19, 2010 | 1983 Jeep CJ5

2 Answers

Want to remove and replace the distributor, how is


This sounds like the oil seal on the distributor needs replacing. I have not got the the timimg details but you can set it up this way until you can get the specs.

  1. Set the rotor arm to No 1 cylinder.
  2. Now mark this on the distributor.
  3. Mark the bottom of the distributor and the housing (inline with each other).
  4. Now put the car in gear and do not turn the engine.
  5. Check your timing marks on both your cam and crank shafts.
  6. Take out the distribuor and replace the the worn seal.
  7. Put back the distributor while lining up all the alinement marks that you have made.
  8. Now nip up the the distributor but do not full tighten it.
  9. Check your alinement marks, take the car out of gear and start the engine.
  10. If the engine is not running correctly, you can increase or decrease the engine speed by moving the distributor slightly to the left or right.
  11. When you have the engine tick over speed to your liking you can stop the engine and and tighten up the distributor.
Following these instructions you should be only a few degrees out at the most.
When you get the the correct timing information you can use a timing light to rset up the ignition timing.

Ray

Aug 30, 2009 | 1986 Toyota Celica

1 Answer

When setting the timing gears, where do you set the distributor?


from memory no4 on dissy when timing marks on cam timing in correct position, no 1 cam lobes should be "rocking" and no4 cylinder should be at top dead firing stroke(ignition)should be notch in dissy when cap is off or set so rotor button is lined up with cyl no 4 ht lead position

Jun 06, 2009 | 1986 Isuzu Pickup

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