84 Dodge D100 gas 225 slant 6 ignition "fireball" questions

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84 Dodge D100 gas 225 slant 6 ignition "fireball" questions

Postby 888 » Thu Feb 04, 2016 1:12 pm

I picked up a straight little little D100 shortbed with the slant 6 gas engine in a package deal with a D150 parts truck I needed for the Cummins projects. I have no idea what I'm going to do with it but it's a 4 speed floor mounted manual tranny shortbed with nicely faded paint and very little rust so I bought it.

I was told it will start and run but needs carb work, I haven't bothered with it since it was towed to the house a few weeks ago. I put in a good battery and cranked it over and got a small fireball out of the carb and some small lingering flames from the carb after it shut down. It appears to me I've got spark with valves open versus a carb issue, unless I'm way off base. I saw this on a Vette once when I let a guy put the distributor in when I was setting the valves and he didn't notice the spiral gear on the distributor shaft. Much bigger fireball that time.

Based on the big Electronic Ignition System decal on the air cleaner this D100 should not have points and base timing via the distributor? The previous owner has the air cleaner assembly removed. The electrical connection to whatever is on the air cleaner is disconnected and all the vacuum lines on the entire engine are capped off, and there are a lot of them. I'm assuming that it needs the electrical cable, air cleaner, and vacuum lines reconnected before it can sort out the timing? It has most of a vacuum diagram on the fenderwell so I can probably recreate what should be there.

Anybody know much about that era of Dodge/Chrysler electronic ignition systems and how dependent they are on the vacuum input etc? Any other ideas on how to avoid the fireball?

TIA

Joe
93 Dodge D-350 Cummins Xcab DRW - completely stock
89 Dodge D-250 Cummins SRW 5 speed father and son project
84 Dodge D-100 5 speed slant 6
92 Dodge D-350 Cummins DRW 5 speed
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Re: 84 Dodge D100 gas 225 slant 6 ignition "fireball" questions

Postby 888 » Mon Dec 19, 2016 8:01 am

Anyone ever installed a manual choke cable on the 225 slant 6? I've installed a rebuilt carb and was looking at the electric choke stuff and thinking back to when I installed a manual choke on a 84 Chevy truck with a straight six. Started better and got better mpg, just thinking about doing that on this one and seeing if anyone else had tried it. Thanks
93 Dodge D-350 Cummins Xcab DRW - completely stock
89 Dodge D-250 Cummins SRW 5 speed father and son project
84 Dodge D-100 5 speed slant 6
92 Dodge D-350 Cummins DRW 5 speed
others....
888
fuel screw!!!!
 
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Re: 84 Dodge D100 gas 225 slant 6 ignition "fireball" questions

Postby PToombs » Mon Dec 19, 2016 5:20 pm

Way back in the 80's when I had 70's Darts I did it. I don't remember it being a big deal, just buy a kit and put it on. Not sure if the truck is much different.
pete

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Re: 84 Dodge D100 gas 225 slant 6 ignition "fireball" questions

Postby DodgeFreak » Mon Dec 19, 2016 9:54 pm

Manual choke should be straight forward. Didn't see the original post was from Feb.
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Re: 84 Dodge D100 gas 225 slant 6 ignition "fireball" questions

Postby Philip » Tue Dec 20, 2016 8:09 am

Slant 6's are noted for the plastic drive gear for the distributor going bad. I would pull the distributor and check it before going to far with it.

I replaced a distributor last summer on a old Heston swather for that reason. A rebuilt distributor runs around $69.

The fireball out of the carb is one sign of the distributor drive gear issue.
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Re: 84 Dodge D100 gas 225 slant 6 ignition "fireball" questions

Postby 888 » Wed Dec 21, 2016 9:14 am

Thanks guys! The distributor gear makes sense, that was behind the fireball out of the Vette I was working on, but the guy put it in wrong.
93 Dodge D-350 Cummins Xcab DRW - completely stock
89 Dodge D-250 Cummins SRW 5 speed father and son project
84 Dodge D-100 5 speed slant 6
92 Dodge D-350 Cummins DRW 5 speed
others....
888
fuel screw!!!!
 
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Re: 84 Dodge D100 gas 225 slant 6 ignition "fireball" questions

Postby stevediesel » Sat Dec 24, 2016 9:23 pm

Don't forget to check the spark plug wiring too, if you haven't already. It may have the reluctor wheel like in the 70's electronic ignition and can still be base timed by moving the distributor. If you pull the distributor to check the gear, they are kind of a booger to get back in.
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