4.0 missing on cylinder #6 - Pirate4x4.Com : 4x4 and Off-Road Forum

MudTJ · 08-06-2009, 10:48 AM

Cylinder 6 won't fire, we replaced the cap,rotor,plugs and wires thinking that would fix it but it didn't. The cylinder has compression. My guess is fuel injector, anyone else have a guess? Rig is in the shop getting some of the rollcage reworked but i need to figure out where to dive in to fix this motor when i get it back friday.

jeeplt1 · 08-06-2009, 12:25 PM

its either gonna be the injector or the distributor. ive seen both cause your problem. use a tester to see if the distributor is firing at that cylinder. i suppose the old "ground the plug wire to sumthin" will work but i prefer a light. if thats fine then its your injector

08-06-2009, 10:48 AM	#1 (permalink)
MudTJ Registered User Join Date: Oct 2004 Member # 37430 Location: Jackson and Starkville, MS Posts: 288	4.0 missing on cylinder #6 Cylinder 6 won't fire, we replaced the cap,rotor,plugs and wires thinking that would fix it but it didn't. The cylinder has compression. My guess is fuel injector, anyone else have a guess? Rig is in the shop getting some of the rollcage reworked but i need to figure out where to dive in to fix this motor when i get it back friday. __________________ TJ on rockwells and 44's

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08-06-2009, 12:25 PM	#2 (permalink)
jeeplt1 Registered User Join Date: Aug 2006 Member # 78377 Posts: 710	its either gonna be the injector or the distributor. ive seen both cause your problem. use a tester to see if the distributor is firing at that cylinder. i suppose the old "ground the plug wire to sumthin" will work but i prefer a light. if thats fine then its your injector