how to check the coil pk on a 99 daewoo lanos

[darsh4126]

Hi

I am new here i guess this is the right place to post this. I have check engine light flashing proble. It happens usually on the freeway. I did some searches and i found out that it is do to the misfire. I changed out my spark plugs and the ignition wires. I want to check the coil pack. Is there a specific procedure to check the coil pack?


Thanks
darshdarsh4126

Posts: 1
Joined: Wed Sep 07, 2011 9:36 pm
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[benzino]

Your best bet is to download a service manual, either purchase one for about $5 or search for one of the free versions.
That will detail all the diagnostics and testing procedures.
Good luck

[darsh4126]

Thanks for the reply. I have downloaded a free service manual, but it does not have it. However, it has two thousand some pages.

[Daniel]

I don't know if this a "specific procedure" to check coil pack but I'll do the following.

-place all 4 plugs still connected to HT wires on metal parts of engine.
-disable fuel pump by removing fuel pump relay or fuse.
-watch for 4 bright blue sparks while someone cranks engine.

Misfire can come from other sources.
-sticky valve(s).
-EGR.
-clogged fuel filter.
-lazy fuel pump.
-...

[darsh4126]

THank you for the reply.

Yes you are right. EGR can cause misfire. i had my ELmscan 5 was recording the data while i was driving, and i see manifold absolute pressure seems normal. I thought if it is a EGR problem then you loose the vacuum, eventually intake Manifold pressure will be high.

I am going to post a new thread under engine misfire, and everybody here welcome to help me.

THanks

[darsh4126]

HI Daniel

What do you mean by sticky valves? What valve are you referring to?

Thanks

[Daniel]

HI Daniel

What do you mean by sticky valves? What valve are you referring to?

Thanks

Valves of valve train under camshaft.