Question about 1989 Chevrolet C2500
Rebuilt distributor and may have installed it 180 degrees out. It runs but not smoothly.
Posted by Anonymous on
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Posted on Jan 02, 2017
My experince with PEP Boys is they do not honor their warrenties. But I would go back and complain about the car running hot since the only part of the cooling system they didn't change was the radiator they did something wrong. It should not be running hot. Is the cooling fan running? If not they probably didn't reconnect the wires to it or broke a wire. They also conned you on the water pump, you have to take out the distibutor to get to the water pump not the other way around.
Posted on Apr 21, 2009
Yes it is possible to be a tooth off or more and still run but if one cylinder is misfiring then it may be a bad plug or plug wire pull that plug and see if it is worn out and try replacing the wire first. if the plug has a wide gap that can cause it to misfire. you may have a bad injector too but don't know for sure. This is one of them questions that need to be looked at physically to know for sure.
Posted on Mar 25, 2010
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.
Posted on Oct 25, 2010
Try and find, first of all, a hotter plug. Second of all, I'd watch your dipstick very close. Add a hotter (210F) thermostat, get it hot quicker. Finally, if all else fails, you may need to put on new valve guides, or check your rings.
Posted on Dec 18, 2010
Welcome to the club! Anybody who has never had this same problem has not worked much on cars! I say this because I have done the same thing several times.
Anyway, there are timing marks on the front crankshaft pulley and on the distributor. (see pictures)
You have to be sure that Number 1 piston is coming up on the compression stroke when you line up the mark on the front crank pulley with the indicator on the timing chain cover. To do this, remove the spark plug from #1cylinder and stick your finger in the hole. Have a helper "bump" the starter untill you feel the compression trying to push your finger out of the hole. Then use a wrench or socket on the crankshaft pulley bolts to get the marks lined up correctly.
If you look at the edge of your distributor with the cap removed, you will see two marks on the edge. One is an "8" and the other is a "6". when you drop the distributor into the hole, the distributor rotor needs to point directly at the "6" mark. (Since your Blazer is equipped with a 3.4L 6-Cyl. engine) (See Picture)
Sometimes the oil pump is not lined up properly to let the distributor drop all the way down in the correct position. There are two ways to handle this:
1. you can stick a LONG screwdriver down into the hole and try to rotate the oil pump into the correct position.
2. You can find the spot where the distributor WILL drop all the way down, then lift it back up and move it forward 1 tooth. the oil pump will also move 1 tooth and let the distributor drop again. Repeat this until the distributor drops into the proper position to get it lined up with the mark on the distributor.
Posted on Oct 29, 2011
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