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ck98daksport
Dodge Dakota
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5/07/2004
22:48:34
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 Subject: new pcv=bad gas mileage
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Message:
i put a new pcv valve in my 98 3.9 and noticed that in a 10 - 15 mile round trip i was using 1/8 tank of gas, thought this wasn't normal so put the old one back in after cleaning it out the best i could. Now the gas mileage is back up to where it was. Is it possible i had a bad pcv? bought it from my local auto zone, are there any suggestions on why this happened or any suggestions on a different brand?
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another mark
Dodge Dakota
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5/07/2004
22:53:39
| RE: new pcv=bad gas mileage
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Message:
Did it rattle? Was it plugged?
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vern
Dodge Dakota
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5/09/2004
19:01:58
| RE: new pcv=bad gas mileage
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Message:
don,t use anything but a cheap DC pcv[plastic]
valve,there the only ones that work right in these.
the metal ones won,t work right for some reason,
had a good friend who worked for the local dealer
tell me this,they had this problem with the metal ones
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vern
Dodge Dakota
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5/09/2004
19:02:29
| RE: new pcv=bad gas mileage
IP: Logged
Message:
don,t use anything but a cheap DC pcv[plastic]
valve,there the only ones that work right in these.
the metal ones won,t work right for some reason,
had a good friend who worked for the local dealer
tell me this,they had this problem with the metal ones
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ck98daksport
Dodge Dakota
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5/11/2004
10:01:53
| RE: new pcv=bad gas mileage
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Message:
the new pcv rattled for a little bit, probably the first day i had put it in but then the next day it didn't. kinda thought that the metal ball had heated up too much and melted itself into the plastic valve. i don't want the ball to come out and go into a cylinder or get stuck wedged in a valve. the mopar valve is also plastic but seems to be a thicker type.
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p2gee
Dodge Dakota
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5/23/2004
02:11:57
|  RE: new pcv=bad gas mileage
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Message:
The mistake you made was buying a automotive part from AZone. Pcv valves are essentialy a regulated vacuum leak. Alot goes into determining the calibration of this vacuum leak including engine size and cylinders, fuel system, weight , gearing ect. Places like Azone just get a gross of PCV valves that fit a broad range vehicles and box them with part numbers to cover the range of vehicles they fit. No consideration is given to whether they flow too much or too little for the vehicles they fit. AC DElco is about the only company I've seen that that sells PCV valves that flow properly for the specific application.
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