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post #1 of (permalink) Old 01-31-2004, 06:12 PM
bggrnchvy
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Mileage from new plug wire, possibly distributor?

Has anyone with a Vortec engine replaced the sparkplug wires with after market in an attempt to get better spark or mileage and had it work? Im just trying to get the most out of my engine. Is it also possible to replace the distributor rotor on these engines. I ask because the cap is so different from all the other distributers I have seen.
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post #2 of (permalink) Old 01-31-2004, 10:44 PM
 
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Re: Mileage from new plug wire, possibly distributor?

I have changed spark plugs, wires, cap/rotor before. They are very easy to do and is a good idea to do for routine maintenance. On the other hand, when installing a cap/rotor, DO NOT OVER TIGHTEN. This happend to me, and driving home from Indiana to the northern suburbs of chicago, i broke down and couldn't get the truck to turn on again. It was due to the over tightening of the cap/rotor, which then malfunctioned the distributor itself. Would have been $700 from dealer, but with extended warranty it was 100 plus the towing fee which i got some of the money back.
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post #3 of (permalink) Old 02-01-2004, 08:32 PM
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Re: Mileage from new plug wire, possibly distributor?

yes the rotor can be changed. i don't really see much of an advantage to aftermarket plus, especially in an effort to gain mpg. the gains would be minimal at best. i think the gap is pretty important though. so, mess with that on a good set of Delcos until you fing the optimum gap.
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post #4 of (permalink) Old 02-02-2004, 06:39 AM
 
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Re: Mileage from new plug wire, possibly distributor?

vortecs run such a high powered ignition set-up anywas, the aftermarket stuff isnt going to do a whole lot for you. like shorts said, go ahead and change them if its due for it, but i wouldnt waste a whole lot of money to get a bigger spark. its just wont end up paying for itself in fuel economy savings
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