spark plug gap for 5.3
11-01-2002, 09:17 AM
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spark plug gap for 5.3
2000 5.3 hppIII, powerstat, k&n, maf descreened, tb bypass, flowmasters, taylor wires, ngk tr55 spark plugs, I am getting alot of knock retard i gapped my plugs at .050 chevy says .060 could that be a reason. a guy said i am getting knock because my truck is a ext cab and is to heavy?? if i buy ls1edit could i put more gas in there and fix it??
sure appreciate your input. (thanx)
sure appreciate your input. (thanx)
11-01-2002, 10:07 AM
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Re: spark plug gap for 5.3
Are you using 91-93 octane?
LS1 Edit can fix the problem but I would like to know what is causing it first. A heavy vehicle will be more prone to detonation than a lighter vehicle. Opening up the exhuast also helps. I would take out the HPP3 Power Tuning and see what happens. Some people get bad knock when the Power Tuning is installed.
LS1 Edit can fix the problem but I would like to know what is causing it first. A heavy vehicle will be more prone to detonation than a lighter vehicle. Opening up the exhuast also helps. I would take out the HPP3 Power Tuning and see what happens. Some people get bad knock when the Power Tuning is installed.
11-01-2002, 10:15 AM
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Re: spark plug gap for 5.3
I reduced the octane level from 93 to 87 on my hppIII and i did not see any Knock. but i also noticed the truck got a turtle effect (slow).
11-01-2002, 03:58 PM
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Re: spark plug gap for 5.3
Then we know it is the HPP3 cuasing the problem. What brand gas do you run? Adn do you use the same gas station ALL the time?
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