Adjusting the timing after changing the timing belt

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Old 12 Nov 2005, 10:08 am   #1 (permalink)
Mark22
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Default Adjusting the timing after changing the timing belt

I went to the dealer 3 weeks ago to change the brakes. They told me at
63000 miles that I should change the timing belt. I was not prepared for
$500 how much they wanted for that. Last weeked I went to my mechanic and
he changed it for $220. I asked him if he will adjust the timing using the
strobo light and he said that is not necessary, there are some marks on the
engine and they just have to be aligned. I read in the maintenance manual
that you need to use the strobo light. Yesterday unfortunately I noticed
that the car doesn't start like before; I have to keep the key turned on
for about 4 second to start. Now I have the following questions:
1-my mechanic cut corners not using the strobo adjustment?
2-can I do it myself (I used to do for my old Ford Taurus; I had the
manual with the whole procedure and the strobo light)
3-where can I get the instructions (on the net) how to make the
adjustment



Thank you so much

Mark

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Old 12 Nov 2005, 10:56 am   #2 (permalink)
Daniel
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Default Re: Adjusting the timing after changing the timing belt

Sounds like you and the mechanic need to clarify the difference between
cam timing and ignition timing.
When chenging the timing belt, you use the marks he described. They
have to be exact. If you are one "tooth" off on the timing belt, the
timing of the valves opening will be off resulting in loss of power.
The strobe light is used for setting ignition timing.
Now the distributor rotor is driven by the end of the exhaust camshaft,
so if the cam timing isn't right, the distributor timing can also be
affected.
If the ignition timing was set correctly for a new timing belt, as the
belt ages it can stretch slightly alterting the ignition timing. If it
was reset, then you need to reset it again with the new timing belt. If
not, then the new timing belt should put the ignition timing right back
where it belongs.
It you want to check it yourself, you need to take a paper clip and
connect - I'm guessing here, you should double check a manual first -
TE1 and E1 (?), the check engine light on the dash will flash, then
you've disabled the computer ignition advance and can check with the
timing light.
I you just had the timing belt changed, and the engine's not running as
well, chances are, the work was done improperly.
That mechanic should also be able to quickly and easily confirm correct
ignition timing.
Here's a clue. If he checks ignition timing and it is off, the timing
belt is most likely off also.

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Old 12 Nov 2005, 03:57 pm   #3 (permalink)
m Ransley
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Default Re: Adjusting the timing after changing the timing belt

If you have a timing lite check it as Dan said, I cant believe a
mechanic would not put a light on it it takes 5 minutes, Also a good
idea for anybody to do as belts stretch retarding timing loosing you
power and Mpg, Mine was off by 4 degrees and milage was down dy 6 mpg,
timing is so often overlooked

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Old 17 Dec 2005, 12:08 pm   #4 (permalink)
Mark22
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Default Re: Adjusting the timing after changing the timing belt

I went back to the mechanic and explained the problem. He first changed an
engine mount (I think is called like that-a rubber thing) that solved most
of the rough shaking. After that he checked again the timing belt, he said
that even installed another new one to make sure that it wasn't the belt
the culprit and he said that everything it is ok but he can't explain the
problem that still exists, delay in starting. I just checked today the
fuel consumption (I haven't done this in a year) and is not good, 16m/1
gal (60% city+40% highway). Should I go to the dealer to have the codes
checked? Thank you.

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Old 17 Dec 2005, 01:18 pm   #5 (permalink)
m Ransley
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Default Re: Adjusting the timing after changing the timing belt

Did he check the timing with a light and the proper terminals jumped.
Have you had it on a scope on that also checks exuast emissions. Is it a
4, alot of miles, is 02 sensor original, . 16 is bad a 4 on 60% highway
I do 28 - 29 in summer, worse in winter. My 90 is down now on milage I
found a gas leak..How are plug burning, condition tells alot. Have you
ever changed the differential oil, i use Mobil synthetic trans fluid it
helped. There are alot of small things that add up, your mechanic sounds
like a hack if he can`t find them. Last spring I was down to 22 did
everything and went to 29, are brakes dragging? At 16mpg it should be
easy to find the issues, it could be alot of small things.

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