What is the spark plug gap for the 99 jimmy 4.3L

You need the plug make and type. Different plugs have different gaps and some have preset gaps.

Google
(make of plug), (make model vehicle - [engine])

Also YOUR question needs

year make model (in your case, of the engine if out of another vehicle.)

Spark Plug Gap - AutoZone

www.autozone.com/.../specificationsMain.jsp?...Spark+Plug+G...

AutoZone2004 Mercury Grand Marquis 4.6L SFI 8cyl ' Specifications ' Spark Plug Gap.

AstroSafari.com • Spark plug gap size?

www.astrosafari.com/viewtopic.php?f=43&t=81409

Jul 27, 2015 - You're doing a '96? I think EARLIER 2nd Gen 4.3's used a .045" gap ; I believe it changed in 2000 or 2001 but don't quote me on that. All i'm ...Missing: gov

AstroSafariVans.com • View topic - spark plug gap question

astrosafarivans.org > ... > ENGINES GENERAL/PERFORMANCE

Nov 28, 2012 - 15 posts - ‎4 authors
My question is do I gap the spark plugs per 89 4.3 specs or do I use the 95 .... The vortec heads for a V8 chevy are 1996 and up however there ...Missing: gov

What is the proper sparkplug gap? - CarGurus

www.cargurus.com > Questions > GMC > Jimmy

CarGurusMar 16, 2013 - My Haynes manual and various places I've seen online say the gap is .045 inches ... spark plug gap for 1992 4.3 160 HP? ... Used GMC Safari".Missing: gov

[PDF]2000 GMC Safari Owners Manual - GM Extended Warranty

www.vadengmpp.com/owners-manual/gmc/2000-GMC-Safari.pdf

when you change spark plug did you check the spark plug gap
and how old O2 sensors
then you need to know that misfire are calculated with crankshaft sensor data.
you could do a clean with combustion chamber cleaner

Click here to see spark plug gap.

they should be the 41-932 plugs. AC Delco
gap should be 0.060 inch.
Check the gap before installing any plug. You never know if they were damaged in shipping before the part store got them, or if some idiot employee at the store attempted to juggle them while bored one day and damaged them by dropping them.

They should be pre-gapped, but you should always check in case someone dropped the box.
The gap is .060

Depending on engine size
2.5L 0.060
4.3L 0.045

GAP=0.035"

Your spark plug gap is 0.035 in.

AC 41803 Drivetrain:Four Wheel Drive;
@Gap .045" This is a Platinum High Performance Spark PLug


Option : ASP AR25
EngineVIN:W;
@Gap .045"@ High Performance

Stay away from those Gimmick Spark Plugs , they are just more money for nothing. A good platinum spark plug is all you need, the key is to gap it correctly to your application...

On GM products Vin # W it is .045 plug gap
On Gm products Vin # Z it is .035 plug gap

You will not have huge gains in fuel mileage from replacing spark plugs except to say that if your old ones are just extremely bad, there is no magical spark plug with extra mileage manufactured into it.... Hope this helps...