The new guy
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The new guy
- Thread starter Berg
- Start date Start date:
- Last post Last post:
BrockGrimes
Jeep-CJ.com Archive Master
If it's what I think it is, it's for carb heat to prevent icing.
gillmore
Active Jeeper
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- Vehicle(s)
- FORMER: 1979 Jeep CJ5 w/ stock 304 V8, T-150, Dana 20 transfer case, Dana 30 Front & AMC 20 rear, MC 2100 carb, 31x10.5x15 (8" wheels), no lift (HD leaf pack), Warn 8274 winch, ~99K miles.
(assuming I understand) I think that is to assist getting the engine temp up to normal ranges as quickly as possible before pulling in cold air -- thus improving operations and emissions. An old truck of mine was dinged during a smog check for not having the $2 flex tube.
elwood blues
Always Off-Roading Jeeper
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- Location
- Export, PA
- Vehicle(s)
- 1978 CJ7 4.2L Comp Cam & valve train, MC2100 carb, MSD ignition, Dana 30 front, T18 trans, Dana 20 txfr, AMC 20 rear.
Yes. The tube runs to a flange bolted to the exhaust manifold. There is a vacuum actuated flap in the air cleaner assembly that when the engine is cold opens so that the carb can suck hot air off the exhaust manifold, warming the carb up quicker. Once the engine warms up the vacuum cuts off and the flap closes allowing cool air from the grill to the carb.
kicknjeep
Old Time Jeeper
EB pretty much hit the nail on the head....
Berg
Jeeper
Thanks everyone! Sorry it took me so long to reply back.