RE: [DML] Re: Rough running
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RE: [DML] Re: Rough running

I agree on both counts.

Without knowing EVERYTHING you did it could be a number of things.

The Distributor setting is CRITICAL as David said.

You can check your adjustments with the right side Valve Cover off.  When 
the car is SUPPOSIDLY lined up at TDC for #1 BOTH Rocker Arms rock (they 
both have clearance.)  I also used an old mechanics trick and had a buddy 
watch a LONG wooden pencil or similar object move up and down in the Spark 
Plug hole as I turned the engine over.  We would precisely turn the engine 
over until the pencil reached the top and for a split second remained before 
moving back down.  This allowed for perfect Distributor Alignment as well as 
being able to check all the valve clearances (which could be an issue for 
you) and allowed us to double check the timing plate alignment.

A better way to ensure exact TDC is to remove the block plug under the 
intake and drop a VERY LONG drill bit (the book says the size) into the hole 
as you turn the engine over.  The engine will STOP when it reaches TDC for 
number 1 and this alignment is EXACT.

Jeff in NC

>From: "David Teitelbaum" <jtrealty@xxxxxxxxxxxxx>
>Reply-To: dmcnews@xxxxxxxxxxxxxxx
>To: dmcnews@xxxxxxxxxxxxxxx
>Subject: [DML] Re: Rough running
>Date: Sun, 28 Aug 2005 17:15:34 -0000
>Not knowing exactly what you did there are many things that could have
>gone wrong. Without tearing it all apart there are some simple,
>external checks that can be done to see it it is assembled correctly.
>Do a compression test. This will tell you if the timing of the
>crankshaft and camshafts are close and you don't have any cracked
>piston rings, misadjusted valves, etc. Next, reinstall the
>distributer. It is CRITICAL that you have the #1 cylinder at TDC just
>before the combustion stroke at the same time the distributer is
>pointing at the #1 spark plug. On a Delorean the cylinders are NOT
>equaly spaced on the distributer cap. The timing is asymetrical and
>You MUST fire the #1 cyl position of the cap at the #1 cylinder.
>Timing is 13 degrees. You might also verify your timing marks. Get the
>#1 cyl to TDC and make sure your timing marks line up. Use chalk or
>red paint to make them easy to see. Use the Workshop Manual to see
>where #1 cylinder is and the correct firing order and numbering plan.
>David Teitelbaum
>vin 10757
>--- In dmcnews@xxxxxxxxxxxxxxx, "lingolor" <rlingo@xxxx> wrote:
> > Ok guys.  I have already searched the archives and had no luck
> > finding the right answers to my problem. So now I'm asking for yalls
> > help with my cars rough running engine.
> >
> > I just refinished rebuilding my engine.  I am 100% positive my timing
> > chains are in the correct position on the cams and crankshaft because
> > I followed the directions in the shop manual.  So that's not a
> > problem..  I also set the distributor cap timing following the
> > instructions from the shop manual.  Using a timming light, I have
> > adjusted the timing between 12 and 0 degrees TDC for the #1 cylinder
> >
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