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boomer

06-20-2007 08:04 AM

Plug Gap 5.3 2001

I want to change the plugs on my 01 5.3 Suburban, The plugs Bosch Plantinum come gapped at .04 and , the owner manual says .06. What do you think I should do,

Sonic30ss

06-21-2007 11:32 AM

Not sure about the Bosch, but I just put Denso's in my 840 and they came with a warning not to gap. They said it could break the ground strap. They were at .04 and they worked great, quicker starts and smoother idle.

wannabe

06-21-2007 11:53 AM

Gap to factory specs at .06

Bosch gaps are set for majority of mfrs at 035 to 050. GM has a coil per cylinder and 060 works fine- better burning for the mixture.

Wannabe

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