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Re: 1985 Dodge B150 fails emissions twice!
Vanube #753490 October 20th 2019 9:06 pm
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I'll do it! I got the beefed up cap, rotor, wires. What kind of plugs do you recommend?

Last edited by Vanube; October 20th 2019 9:07 pm.
Re: 1985 Dodge B150 fails emissions twice!
Vanube #753491 October 20th 2019 10:21 pm
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I like NGK plugs.


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Re: 1985 Dodge B150 fails emissions twice!
Vanube #753512 October 22nd 2019 2:23 pm
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I set the timing. The van is sputtering and lurching (kind of like jerking if you were to pop the clutch) at low speed coming out of first and second gear. I don't think this is a timing problem. I'm pretty sure it has something to do with the vacuum system. Disconnecting certain vac lines from the carb effect this problem. Though, only improving it slightly. It runs best after disconnecting several of them.

Is it possible to illiminate any of these? Just plug them?

Re: 1985 Dodge B150 fails emissions twice!
Vanube #753513 October 22nd 2019 2:40 pm
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If it ran good before adjusting timing, I would start diagnosing by looking at the timing.

Are you positive you were using the correct timing mark? Are you positive you had the timing light clipped onto the spark plug wire for the #1 cylinder? Are you using a "dial back" timing light? if so, are you sure it was set to zero? You set the base timing to 10-12 BTDC, right? Not ATDC? Are all plug wires connected to the cap and plugs?

The vacuum hoses you still need to leav attached to the carb are the PCV, the heated air intake, the EGR, the bowl vent, the cannister purge, and the distributor vacum advance. What else is hooked up to the carb still?


Windows- they're what make a van worth owning!
Re: 1985 Dodge B150 fails emissions twice!
Vanube #753515 October 22nd 2019 2:53 pm
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Yes, timing is done correctly.

This was happening before setting the timing. I thought setting the timing would eliminate the problem.

All of those you listed are hooked up and none others.

I drove it briefly before setting the timing with the canister purge disconnected, air cleaner removed, EGR disconnected and plugged, distributer disconnected and plugged at the distributor and it ran as normal.

Re: 1985 Dodge B150 fails emissions twice!
Vanube #753516 October 22nd 2019 3:22 pm
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Define "ran as normal." Ran problem free? Or ran exhibiting the same symptoms of sputtering and poor performance?

Where do you have the distributor vacuum advance line attached on the carb?


Windows- they're what make a van worth owning!
Re: 1985 Dodge B150 fails emissions twice!
Vanube #753517 October 22nd 2019 3:56 pm
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"as normal" meaning without problems. Distributor is connected to "to distributor" port, passenger side front of carb below bowl vent fitting.

Re: 1985 Dodge B150 fails emissions twice!
Vanube #753518 October 22nd 2019 4:07 pm
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OK, disconnect all vacuum lines from the carb and reconnect one at a time until you find the one that causes the problems.


Windows- they're what make a van worth owning!
Re: 1985 Dodge B150 fails emissions twice!
Vanube #753519 October 22nd 2019 6:36 pm
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OK, well I disconnected the canister purge- I left all the other lines connected and tried to start the engine. No start. Now it won't start at all! Ha!

Tried to start it many times.

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