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tranny fuel on intake

bigjon33880

bigjon33880

Big Jon
39
0
Eudora, KS
71 F100 360, i noticed it started to collect tranny fluid on the intake, back passenger side. there is a line that looks like it comes from the tranny and is stuck on a little square box that is on the intake right behind the carberator. is there a gasket or something under that little square or should i be looking somewhere else. the line that is coming up from the tranny is a metal line and there is a six inch rubber line from it to the manifold which i have replaced
 

Bob Ayers

North Carolina Chapter member
1,474
111
Durham, NC
Replace the modulator valve on your tranny, it has a ruptured diaphram in it...
 
bigjon33880

bigjon33880

Big Jon
39
0
Eudora, KS
easy to get to? could that modulator effect transmission performance
 
Ranger429

Ranger429

885
53
Yes if it is leaking. It should be on the passenger side of the rear of the trans.
 
bigjon33880

bigjon33880

Big Jon
39
0
Eudora, KS
could that explain the smoke coming out of the vent of the valve cover
 
Mil1ion

Mil1ion

Still Da Man
6,277
221
Just Above a Huge Gas Source
Maybe..

the modulator is vaccum operated.. If engine vaccum sucks fluid past the modulator is can be burned with the fuel.

I use trans fluid in my fuel once a year to clean the valve and piston related parts.
 

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