K
Poor gas milage
mazdatweaker
+1y
post deleted
Post was last edited on May 13, 2009 02:01. Edited 1
time.
blueb
+1y
Been real busy the last few days, but finally found some time to perform the test.
Idle is at 850, hot.
Dwell reading was around 45-50 degrees at idle.
It would drop down to around 20 degrees if I reved up the motor to what I'm guessing was 2500-3000 rpm.
When I let the throttle close back to idle, the dwell reading would creep back up to the 45-50 reading in about five seconds.
I hate to admit this, as you think I would have checked everything before calling out for help....
...but, as I was hooking up the meter I found a vacuum line to the thingymabob pictured below was disconnected.
Hose hanging in close proximity to the fitting on the bottom of the thingymabob.
Could the non-functioning thingymabob have been causing the poor fuel milage?
Plugged it in before the test, but it didn't seem to make any difference to how the truck was running (still really good).
Idle is at 850, hot.
Dwell reading was around 45-50 degrees at idle.
It would drop down to around 20 degrees if I reved up the motor to what I'm guessing was 2500-3000 rpm.
When I let the throttle close back to idle, the dwell reading would creep back up to the 45-50 reading in about five seconds.
I hate to admit this, as you think I would have checked everything before calling out for help....
...but, as I was hooking up the meter I found a vacuum line to the thingymabob pictured below was disconnected.
Hose hanging in close proximity to the fitting on the bottom of the thingymabob.
Could the non-functioning thingymabob have been causing the poor fuel milage?
Plugged it in before the test, but it didn't seem to make any difference to how the truck was running (still really good).
91b2200(cody)
+1y
that thingymabob is your.......huh crap i forgot ...
lemme go look in my manual.. lol
lemme go look in my manual.. lol
91b2200(cody)
+1y
its your high altitude compensator i believe... still lookin thru chiltons manual ( you can borrow if ya want)
yeah pretty sure its that.. and the hoses connect to carb right ?
yeah pretty sure its that.. and the hoses connect to carb right ?
blueb
+1y
Probably doesn't do much of anything at low altitude.
Glad I didn't drive over any hills, my engine may have imploded!lol.
Well, I'm pretty sure that an open vacuum line wasn't helping anything...
Glad I didn't drive over any hills, my engine may have imploded!lol.
Well, I'm pretty sure that an open vacuum line wasn't helping anything...
blueb
+1y
yup
91b2200(cody)
+1y
well.. if ya wanna borrow this manual you may!
mike84
+1y
I dont know what to say... I had a post a couple of weeks ago where I drove about 600 miles and averaged about the same. My truck has a high idle when its cold. Mine is all stock with no modifications to the carb or high alt. pressure thingy....
What should that engine be getting?
What should that engine be getting?
mazdatweaker
+1y
post deleted
Post was last edited on May 13, 2009 01:48. Edited 1
time.
mazdatweaker
+1y
post deleted
Post was last edited on May 13, 2009 01:50. Edited 1
time.