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Post by Dave on Apr 4, 2004 19:12:58 GMT -5
The automatic choke that is controled by a vacume control valve dosn't seem to be working right. I suspect if it has (should have?) a temperature sensor. Im just not sure where this is located. The valve clicks when powered. but its not allowing vacume pressure to pull the valve control arm that controls the shutter in the air-intake when the engine is cold.. i can only presume some kind of temp sensor isn't has lost its connection or its a dud. not a major problem, but temps here are getting colder again off an on.. helps climbing the hills especially when the engine is rated at only 58 horsepower  anyone have experience with this? |
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Post by Davotoo on Apr 5, 2004 9:45:08 GMT -5
Hey Dave:
If your refering to the big thing on the intake manifold, it's not a choke. They did away with it completely in 1984. All it does is choke off the air when the key is turned off to prevent the engine from running away.
Something VW diesels liked to do when they got old or any diesel will do if you roll the truck/car over so that the crankcase oil runs into the intake.
You don't need it!!!!! Just tie it in the open position.
Thw choke (if you like to call it that) on a Mazda diesel is hand operared and just advances the injector timing with a little more fast idle.
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Post by Dave on Apr 5, 2004 19:45:40 GMT -5
no, it's a choke, its a 1983 model. there is a shutter (flap) in the aluminum intake when the engine is normaly cold, the flapper closes partially, and restricts cold air-intake. the restriction is governmner by vacume control from an electric valve control modual. If i bypass the valve and hook the vacume line up. the choke is on all the time (this manual method i used in the brutal -38'c winters) (it really blows alot of black soot then) The manual knob in the truck is actually a fast idle control (which i keep on fast idle) when shifting down-town stop and go traffic. all it does on my engine is pull on the throttle cable slightly, its adjustable by a large nut, same way a carbertator is adjustable for idle control. although you could be right about the ignition off when you reffered to the 1984 model(s)? but even if this is disabled, the engine will shut off. I think there is a fuel shutoff or something, becuase i have a wire(s) running to the injector pump. Perhaps there is a plunger that stops the flow of fuel to the injectors? It's a flakey weird setup.  |
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Post by Davotoo on Apr 6, 2004 10:40:38 GMT -5
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Post by Dave on Apr 6, 2004 20:21:04 GMT -5
do you have anymore photos of the engine
parts, like you do of the injector pump??
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Post by Dave on Apr 6, 2004 20:56:19 GMT -5
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Post by Davotoo on Apr 7, 2004 19:07:11 GMT -5
Just some that I took of an old spare pump. I tried to help my brother replace his leaky control (throtle) shaft O-ring seal. He did but bent it up inside cause he didn't remove the calibration screw all the way when he cranked down the top. Got an E-mail Address I can send um to? Also can you kill one of the Davo accounts. I screw up and made 2, so now neather one works Davo -> madfax@ttlc.net |
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Post by Dave on Apr 7, 2004 19:25:18 GMT -5
I havent needed to do that in ages. (trys to remember how)  J.K send to north1 @ nexicom . net (sorry for the spaces, i get tonns of spam already) they always find new ways to spam us. ill delete both accounts for you. did you register them? Dave |
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Post by Davotoo on Apr 8, 2004 8:21:22 GMT -5
Yea...I registered them both and then changed the pass word on one, (maybe) to token****  Got to plug in the spare drive to get um. God that was a while ago. Still have the pump kicking arround. We wrecked the threads on it tring to pull the gear off with a steering wheel puller. I have 3 running trucks and one for parts. It rotted in half and the motor chewed up an intake valve. (Bad habit perkins have) Probably should have done a valve job at 300K.  |
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Post by Dave on Apr 8, 2004 19:15:12 GMT -5
mind if i post these photos on my website?
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Post by Dave on Apr 8, 2004 19:24:23 GMT -5
ill take some pics of my setup sometime this weekend. i also have a small leak from either A) the copper seal under the bleeder nut on the injector pump or B) (really bad) is the shaft seal on the throttle shaft. (perhaps some kind of bad O-ring seal... it's odd, becuase it does this for a month then stops for several months, then starts again.. It's like 2 drips per second (for now) nothing serious. so far, it really makes the primary oil filter nice and clean ;D |
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Post by Davotoo on Apr 9, 2004 19:21:51 GMT -5
Hey Dave:
Post away!
Diesel davo
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