| Re: hei cap orientation [message #328399 is a reply to message #328379] |
Sat, 20 January 2018 11:00   |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma:
|
Senior Member |
|
|
I haven't seen that snap on top on the distributor cap used for years. Looking closely at it I see that it is snapped on 180 degrees out of position. Looking at the wires it appears that they were installed to match the numbers on that snap on piece. (180 out)
To fix it I see five steps that need to be done:
1. Start the engine. With the vacuum hose disconnected and plugged, look at the current ignition timing with a timing light. (I always paint the mark with white out to make it easy to see.) Record or mentally note the exact position. Depending on the distributor installed it should be somewhere between 8 and 12 BTDC. Most are 8.
2. With engine off, rotate the engine until it is at TDC. Remove cap and verify that the rotor is pointing at #1. If it isn't, rotate the engine one complete turn to TDC again and the rotor should now be pointing at #1.
3. Remove the distributor and reinstall it with the rotor pointing to the lower left approximately 280 degrees CCW where #1 should be and rotate the distributor frame approximately 80 degrees CW do the power plug is on the US passenger side.
4. Remove the that cap snap on lid and start moving wires. All wires should be re-plugged 180 degrees from where they are now.
5. Start the engine and set the timing with a light to where it was before you started this project in step #1. Tighten the distributor hold down bolt.
OR
LEAVE IT ALONE AND IT WILL RUN JUST FINE the way it is.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
