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Re: 1985 Dodge B150 fails emissions twice!
Vanube #753520 October 22nd 2019 6:44 pm
Joined: Aug 2001
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Maniac
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(1) where are you connecitng the cannister purge line on the carb?
(2) are you capping the fitting on the carb when you disconnect the hose?

Sounds like you might be fighting a vacuum leak issue.


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Re: 1985 Dodge B150 fails emissions twice!
Vanube #753834 November 03rd 2019 6:53 pm
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Got it running. It was flooded. Pulled plugs and let it sit.

I'm going back to the timing.

1) when I checked the timing after installing the new distributor (in the exact orientation as the old distributor) it was over 30deg.

2) I set the timing to 10deg and the van runs poorly and and won't start after stopping the engine.

3) I am certain I used the the piston stop tool correctly and Actually... After making my marks on the balancer... My TDC lined up perfectly with one of the grooves.

So this thing seems to be running better at 30+deg than 10deg. Something tells me this is unusual.

Any words on this? Much appreciated!

Re: 1985 Dodge B150 fails emissions twice!
Vanube #753835 November 03rd 2019 7:39 pm
Joined: Feb 2016
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old hand
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I recently installed a new distributor in my 79 b200 and the replacement was installed exactly in the same clocked position and it wouldn’t run correctly and barely started. I had to re time despite the difference in position and she runs perfect. Not sure what’s up with these distributors, or why that happens but haven’t had any issues since and driven 700+ miles on these parts


1987 B250 - Painkiller
Re: 1985 Dodge B150 fails emissions twice!
Vanube #754017 November 10th 2019 5:40 pm
Joined: Mar 2007
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pooh-bah
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Do you have a vacuum gauge you could attach to monitor the vacuum during operation? I'm with Reed on this; it seems to be the major missing data point.

Have you looked down the carb throat to be sure the butterflies are really completely closed when you first depress and release your accelerator pedal? Sometimes the linkage gets misadjusted or wears over the years, or the linkage springs wear out or wrong ones are installed, then various owners and mechanics start screwing around with the mixture and idle speed, getting some really bizarre combinations.

I've seen the control diaphragms blow out internally in those charcoal canisters, resulting in massive hidden vacuum leaks... Backfires are a common cause of this. If you attach a handheld vacuum pump to the master charcoal canister control fitting and pull a vacuum it should hold.

And on old vehicles where odd sputtering symptoms occur, I always suggest inspecting the fuel tank cap; the vents may become obstructed, causing the fuel system to pull a vacuum against the tank. You could try running the cap partially unseated to see if there's a difference.

And sometimes the throttle kickdown linkage can be so far off that weird things happen, especially during acceleration from low speed. If you do adjust idle speed, you really should revisit the kickdown adjustment just to be certain.


-It's been such a LONG TIME... BlueShift>> 1981 Dodge Ram B250 Custom Sportsman Maxi Van


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Re: 1985 Dodge B150 fails emissions twice!
Vanube #754657 December 04th 2019 11:18 pm
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Thanks guys. I appreciate the response very much. I'm going to try these - and try doing a full tune on the carb and see where I'm at after that.

Re: 1985 Dodge B150 fails emissions twice!
Vanube #758726 April 02nd 2020 12:37 pm
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I just read this whole thread. Any updates?


Nate Breece
Re: 1985 Dodge B150 fails emissions twice!
Vanube #771642 February 18th 2021 11:26 pm
Joined: Jan 2021
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stranger
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Me too!

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