LOST JEEPS :: View topic - smoking EHM and bad gas mileage

Interesting stuff. Does the EHM affect gas mileage?
Fine-Dining

FineDining wrote:

Interesting stuff. Does the EHM affect gas mileage?
Fine-Dining

If it does, it did it in a positive way for mine. I did the EHM within a week of getting my CRD in '06. Still am getting consistent mixed average of around 24-25 mpg and travel avereage of near 30 mpg.

I cannot see how the EHM would change anything on mpg. Filter plugging can change mpg.

Do you get a lot of smoke from your EHM? As in small clouds worth of smoke? I just can't believe that there are a bunch of us driving around in a cloud of smoke. I'm also not getting that kind of mileage but I'm also doing a lot of city driving. I just changed my fuel heater assembly and haven't hooked up the heater. Is that a reasonable explanation for bad mpg and potentially excessive smoke?

Fine-Dining

Author:	FineDining [ Tue Apr 20, 2010 7:17 pm ]
Post subject:	smoking EHM and bad gas mileage
Hi, Maybe some you can help me with my latest issue. I recently did a bunch of work on the Jeep and added the GDE eco tune and the EHM. I don't think my problem is with either of the two mods but now I'm getting a ton of smoke out of the the EHM and am suffering terrible mileage. I'm planning on ditching the EHM because I can't have smoke pouring from under the hood. Of course I assume that this isn't normal for those running it. I am running a bio blend but I don't think its bad bio The place is reputable and busy. I'm wondering if I'm having a problem with the turbo. Maybe the intercooler hoses? I have SAMCOs on order but for some reason they delayed shipping them before the volcano and now who knows when they will get here. Thanks for your help, FineDining

Author:	flman [ Tue Apr 20, 2010 7:42 pm ]
Post subject:	Re: smoking EHM and bad gas mileage
Did you top off the oil to the full mark on the dipstick? Many on this forum have said this was wrong and you are overfilled at that point. I don't have any mods except for GDE, but you may be pushing excess oil vapor out of the EHM?

Author:	DOC4444 [ Tue Apr 20, 2010 9:32 pm ]
Post subject:	Re: smoking EHM and bad gas mileage
Significant smoke from the EHM is normal on our '05 CRD. (Now that the rear main seal leak is fixed, no oil needs to be added between 6K oil changes @ 75K.) Too much oil may make it worse, but I don't know from experience. DOC

Author:	FineDining [ Tue Apr 20, 2010 10:06 pm ]
Post subject:	Re: smoking EHM and bad gas mileage
Interesting stuff. Does the EHM affect gas mileage? Fine-Dining

Author:	VMKJCRD [ Tue Apr 20, 2010 11:00 pm ]
Post subject:	Re: smoking EHM and bad gas mileage
It doesn't. I used to have the smoke coming from under the hood to and got annoyed so i rerouted my hose all the way to the exhaust with a 90 under the bumper pointing at the end of the exhaust. Now it just looks like the smoke is coming out of the exhaust.

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Author:	Cowpie1 [ Wed Apr 21, 2010 1:51 am ]
Post subject:	Re: smoking EHM and bad gas mileage
FineDining wrote: Interesting stuff. Does the EHM affect gas mileage? Fine-Dining If it does, it did it in a positive way for mine. I did the EHM within a week of getting my CRD in '06. Still am getting consistent mixed average of around 24-25 mpg and travel avereage of near 30 mpg. I cannot see how the EHM would change anything on mpg. Filter plugging can change mpg.

Author:	FineDining [ Thu Apr 22, 2010 9:25 pm ]
Post subject:	Re: smoking EHM and bad gas mileage
Cowpie1 wrote: FineDining wrote: Interesting stuff. Does the EHM affect gas mileage? Fine-Dining If it does, it did it in a positive way for mine. I did the EHM within a week of getting my CRD in '06. Still am getting consistent mixed average of around 24-25 mpg and travel avereage of near 30 mpg. I cannot see how the EHM would change anything on mpg. Filter plugging can change mpg. Do you get a lot of smoke from your EHM? As in small clouds worth of smoke? I just can't believe that there are a bunch of us driving around in a cloud of smoke. I'm also not getting that kind of mileage but I'm also doing a lot of city driving. I just changed my fuel heater assembly and haven't hooked up the heater. Is that a reasonable explanation for bad mpg and potentially excessive smoke? Fine-Dining

Author:	stoutdog [ Thu Apr 22, 2010 10:22 pm ]
Post subject:	Re: smoking EHM and bad gas mileage
FineDining wrote: Do you get a lot of smoke from your EHM? As in small clouds worth of smoke? I just can't believe that there are a bunch of us driving around in a cloud of smoke. I'm also not getting that kind of mileage but I'm also doing a lot of city driving. I just changed my fuel heater assembly and haven't hooked up the heater. Is that a reasonable explanation for bad mpg and potentially excessive smoke? Fine-Dining Having the fuel heater unplugged should not effect mileage or create smoke. The EHM will create smoke, but should not effect mileage.

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