[DeTomaso] Timing Problem

Art Stephens artstephens at charter.net
Sat Mar 1 18:16:05 EST 2008


> Are you sure you are getting good spark? Did you have the key on when you
> adjusted the valves?

        I pulled every plug wire one at a time last night while the engine 
was running to make sure I was getting fire at every cylinder.  I had fire 
at all eight cylinders but now that you mention it,  the fire may have been 
more orange than blue?  I don't think I had the key on when I adjusted the 
valves?

Thanks Larry,
Art




> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] 
> On
> Behalf Of Art Stephens
> Sent: Saturday, March 01, 2008 5:40 PM
> To: detomaso at realbig.com
> Subject: Re: [DeTomaso] Timing Problem
>
>     If my ignition had been timed to 16 degrees at idle with the vacuum
> line plugged,  what should I see with the engine not running while looking
> at the timing pointer and #1 piston at TDC on the compression stroke?
> Should the rotor be pointing 16 degrees before the #1 terminal on the cap 
> or
>
> should it be pointing straight to the #1 terminal?  I guess this is 
> another
> way of asking if there is supposed to be any advance taking place at idle?
>
> Art
>
>
>
> ----- Original Message ----- 
> From: "Art Stephens To: List-Subscribe:"
> <artstephens at charter.netdetomaso@realbig.comhttp://list.realbig.com/mailman/
> listinfo/detomaso>;
> "Sender: detomaso-bounces at realbig.com"
> <mailto:detomaso-request at list.realbig.com?subject=subscribe>
> Sent: Saturday, March 01, 2008 2:29 PM
> Subject: Re: [DeTomaso] Timing Problem
>
>
>>        Thanks Larry,  I looked at the pin and it looks to be in place,  I
>> can see all the way thru it.  I have disconnected the battery and will 
>> try
>> again.
>>
>> Art
>>
>>
>>> I do like the pin idea. Pull the diz to
>>> take a look.
>>>
>>> Larry
>>>
>>> -----Original Message-----
>>> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
>>> On
>>> Behalf Of Art Stephens
>>> Sent: Saturday, March 01, 2008 5:19 PM
>>> To: detomaso at realbig.com
>>> Subject: Re: [DeTomaso] Timing Problem
>>>
>>>     Even if I screwed up the valve adjustment,  that should have no
>>> affect
>>> on ignition timing should it?
>>>
>>> Thanks,
>>> Art
>>>
>>>
>>>
>>>
>>> ----- Original Message ----- 
>>> From: "Art Stephens To: List-Subscribe:"
>>>
> <artstephens at charter.netdetomaso@realbig.comhttp://list.realbig.com/mailman/
>>> listinfo/detomaso>;
>>> "Sender: detomaso-bounces at realbig.com"
>>> <mailto:detomaso-request at list.realbig.com?subject=subscribe>
>>> Sent: Saturday, March 01, 2008 2:13 PM
>>> Subject: Re: [DeTomaso] Timing Problem
>>>
>>>
>>>>     It passed the straw test.  So it does appear that 0 degrees on the
>>>> timing mark is in fact TDC on #1.
>>>>
>>>>
>>>>
>>>>
>>>> ----- Original Message ----- 
>>>> From: "Art Stephens To: List-Subscribe:"
>>>>
>>>
> <artstephens at charter.netdetomaso@realbig.comhttp://list.realbig.com/mailman/
>>> listinfo/detomaso>;
>>>> "Sender: detomaso-bounces at realbig.com"
>>>> <mailto:detomaso-request at list.realbig.com?subject=subscribe>
>>>> Sent: Saturday, March 01, 2008 1:35 PM
>>>> Subject: [DeTomaso] Timing Problem
>>>>
>>>>
>>>>>     I adjusted my right side, (1-4), valves on my hydraulic roller cam
>>>>> engine with adjustable roller rockers.  I had the distributor cap and
>>>>> wires off during the project.  Now my timing is all screwed up.  My
>>>>> timing
>>>>> light shows that I am way retarded and the engine now runs bad where 
>>>>> it
>>>>> ran smooth before the work.  I am stumped!  I didn't touch the
>>>>> distributor
>>>>> adjustment.  I have the MSD adjustable timing control.  I thought I 
>>>>> had
>>>>> the distributor set a 16 degrees BTDC.  That is not what I am seeing.
>>>>> The
>>>>> light shows 10 -15 degrees ATDC?  With the engine not running,  the
>>>>> rotor
>>>>> is pointing to the #1 terminal on the cap as the balancer shows 0
>>>>> degrees
>>>>> advance.  I disabled the adjustable timing control to see if it was 
>>>>> the
>>>>> problem and I saw no improvement.  I am going to go get a plastic 
>>>>> straw
>>>>> and stick it down the #1 cylinder and see what the timing mark on the
>>>>> balancer shows with the piston at TDC.  I took the Duraspark II
>>>>> distributor apart and could find no problems.  The distributor gear
>>>>> appears to be pinned in its proper place.  Spark plug wires all appear
>>>>> to
>>>>> be going to the correct cylinders.  I thought it must have been
>>>>> something
>>>>> stupid I did,  but I can't figure it out.  It has a new harmonic
>>>>> balancer.
>>>>> The only thing I can think of is that maybe one of the timing gears 
>>>>> has
>>>>> moved on its shaft?  Help!
>>>>>
>>>>> Art
>>>>> _______________________________________________
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