WARNING - if you have a double pumper please read
#1
WARNING - if you have a double pumper please read
I was just tuning a customers car and his vacuum line to his hobb switch to his double pumper setup blew off and here was the result. If you have this same setup in your car (which most of us do that run e85) please check your vacuum lines and dont let this happen to you..
The car is perfectly fine thanks to e85's cooling properties, but it could have gone bad real quick im sure.
notice the boost just took a dive due to the boost leak caused and when the car lost the 2nd fuel pump it instantly spiked 18 AFR+ lean.
![](http://oi55.tinypic.com/2ih58ib.jpg)
My advice: Gorilla glue + zip ties!.. you can never have enough zip ties.. ask john shepherd.. he will say the same![lol](https://www.evolutionm.net/forums/images/smilies/lol.gif)
So hopefully i avoid this from happening to someone elses car by providing this warning.
The car is perfectly fine thanks to e85's cooling properties, but it could have gone bad real quick im sure.
notice the boost just took a dive due to the boost leak caused and when the car lost the 2nd fuel pump it instantly spiked 18 AFR+ lean.
![](http://oi55.tinypic.com/2ih58ib.jpg)
My advice: Gorilla glue + zip ties!.. you can never have enough zip ties.. ask john shepherd.. he will say the same
![lol](https://www.evolutionm.net/forums/images/smilies/lol.gif)
So hopefully i avoid this from happening to someone elses car by providing this warning.
![Thumbs Up](https://www.evolutionm.net/forums/images/smilies/smilie_thumbsup.gif)
#7
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#11
The hobbs switch has a pretty large ridge on it. I think a ziptie with no glue would hold it pretty good. The vac line I worry about most is from the intake mani to the FPR. The nipple on the manifold is straight with not a bit of a flare on it. I am sonetimes tempted to tee off a different line for such a critical vac source.
#13
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