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Virtual Wrench (L J)
Virtual Wrench (L J), Chevy Mechanic
Category: Chevy
Satisfied Customers: 13369
Experience:  35 years Master Mechanic
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What is the spark plug firing order for a Oldsmobile 455

Resolved Question:

What is the spark plug firing order for a Oldsmobile 455?? What is the distributor cap order number??
Submitted: 6 years ago.
Category: Chevy
Expert:  Virtual Wrench (L J) replied 6 years ago.

Year and model please..

Expert:  Virtual Wrench (L J) replied 6 years ago.

How does this look...


 


 


 


 


 


 


 


 


Click image to see an enlarged view


 


 


 


 


 

Expert:  Virtual Wrench (L J) replied 6 years ago.

The first one i sent was for a Pontiac built 455, This one is for the Olds built 455


 


 


Click image to see an enlarged view Fig. 5: 1975 and later;Oldsmobile built engines 260, 307, 403, 455. Firing Order: 1-8-4-3-6-5-7-2. Distributor rotation: Clockwise


 


 


 

Expert:  Virtual Wrench (L J) replied 6 years ago.

Did the diagrams come thru ok?

Expert:  Virtual Wrench (L J) replied 6 years ago.

If you have any further questions, please feel free to reply.


If not, please click on ACCEPT


 


Thanks for asking!

Customer: replied 6 years ago.

Did you get my other email?? Please help :)


 

Expert:  Virtual Wrench (L J) replied 6 years ago.

No other mail has come thru,,,,you can just enter it on this page...

Customer: replied 6 years ago.

I had it wired like the diagram you sent me but it still doesnt work. When I try and start it the carburator loads up and it back fires from the carburator and out the exhaust. Do I have something else wrong with the car?? Could it be bad spark plug wires??

Expert:  Virtual Wrench (L J) replied 6 years ago.

Did you try both diagrams,,,,if you notice they had a 454 built by Pontiac and one built by Olds,,,,and they used both of them in your vehicle.

Customer: replied 6 years ago.
Yes I noticed and they are both wired the same way
Expert:  Virtual Wrench (L J) replied 6 years ago.

Sorry about that,,,i sent you both for the pontiac 455,,,this is for the Olds 455 and its definatly different,,,,,,sorry again. Let me know how it comes out.


 







Customer: replied 6 years ago.

Ok this one is different, I'll try it out first thing in the AM. I'll hit you back then. Thanks for your help

Expert:  Virtual Wrench (L J) replied 6 years ago.

Sounds good,,,just let me know if you need more help.

Customer: replied 6 years ago.
Hello again,

OK I tried it that way and it still wont start. I'm going to accept your answer but do you think there is something else wrong with the car?? What else could be the matter?
Expert:  Virtual Wrench (L J) replied 6 years ago.

Hi there,

 

I'll bet that the timing chain has slipped. You should run a compression test to confirm this,,,,it was very common on these engines.

Virtual Wrench (L J), Chevy Mechanic
Category: Chevy
Satisfied Customers: 13369
Experience: 35 years Master Mechanic
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