Re: [DML] Engine vacuum problems?
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Re: [DML] Engine vacuum problems?



I'm not an expert but it doesn't look like anyone responded so I'll take a
swing.
First, I would double (or triple or quadruple if that is the case) the
vacuum tube routing and verify they are all good.
Second... connect it back up and play with the fuel/air mixture. I'm
guessing leaning it out, it might be too rich/not enough air with the WUR
functioning.
If you disconnect the the vac line, are you plugging it or is it sucking
extra air to run good?
-Kevin


On 10/15/05, stainlessilusion <5n-@xxxxxxx> wrote:
>
> I don't understand this... maybe someone can help me out here. Before
> I begin, the ported switch lines are routed correctly, timing is on 13
> and both vac/mechanical advances in/on the distributor are verified to
> work. I have my vacuum supply line to ported switch disconnected at
> the source (left/drivers side rear intake), my car (cold) starts up
> great, and you can hit the road immediately with no engine/running
> problems or smoke. I plug the vacuum line in and upon cold start, the
> engine sputters and blows bluish/whitish smoke for a minute or 2.
> Hitting the road immediately results in misfiring under even light
> acceleration until warm, and once warm the engine still misfires under
> load or going straight down the road with 3/4 accelerator travel.
> Unplug this line and these problems do not exist; the engine runs
> flawlessly -this is how I've been running for the past few weeks.
> Unplugging the WUR and only running vac advance still makes the engine
> misfire near 4,000 RPMs. Obviously the advance and WUR are what to
> suspect- but my vac advance is fine and WUR is brand new. I'm not sure
> what to make of this, but I would like to get it back to how it should
> be with no problems. Thanks for any ideas/suggestions -----Dani B. #5003




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