Need help. (Posible electrical/spark issue).

When I turn the engine on, it make a loud ticking sound, like spark sound. When the Plug cable number 6 is unplugged, the sound goes away.

Things that have been done
1. Swapped the spark plug
2. Swapped the spark plug cable
3. Changed the coil
4 changed the ignition coil plate.

Any ideas is greatly appreciated.

Link to Video on Facebook https://www.facebook.com/ce...s/10223511010114085/

[This message has been edited by Ceez11 (edited 09-14-2020).]

Look for an exhaust leak on that cylinder. Yes....exhaust leaks can make a ticking sound even though that seems odd.

Welcome to the Forum!

[This message has been edited by Gall757 (edited 09-14-2020).]

quote Originally posted by Gall757: Look for an exhaust leak on that cylinder. Yes....exhaust leaks can make a ticking sound even though that seems odd. Welcome to the Forum!

My buddy and I also checked for exhaust leaks and replaced one of the manifolds that was cracked.

The sound occours when spark plug wire number 3 is connected, when I unplug the wire the sound goes away and of course it runs crappy.

The issue began with lossing power/ compression maybe? And then it escalated to a loud sparking sound comming from the air intake.

I hope this gives a better understanding of the issue.

Thank you for the welcome.

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Cesar G

[This message has been edited by Ceez11 (edited 09-14-2020).]

Wait... so is it cylinder #6 or #3? Also, the fakebook link says "content not available".

Anyway, a ticking noise coming from the intake area could also be a bad lifter. You could try a relative compression test. The cylinder with the bad lifter should have less compression than the rest.

quote Originally posted by Ceez11: Link to Video on Facebook

You'd make the video accessible to a lot more people if you uploaded it to YouTube. You'd also be able to embed the video right here in your post.

I'm not familiar with how those coil packs are wired/numbered, but are you sure you don't have some of the plug wires connected to the wrong plugs?

[This message has been edited by Patrick (edited 09-14-2020).]

quote Originally posted by Patrick: You'd make the video accessible to a lot more people if you uploaded it to YouTube. You'd also be able to embed the video right here in your post. I'm not familiar with how those coil packs are wired/numbered, but are you sure you don't have some of the plug wires connected to the wrong plugs?

Here is the video from YouTube https://youtu.be/WKPrVzoDqEw

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Cesar G

The tick does not follow engine RPMs!.....it's more like a miss in the high voltage.

[This message has been edited by Gall757 (edited 09-14-2020).]

quote Originally posted by Ceez11: Here is the video from YouTube

Not sure how you ended up uploading a postage stamp sized video?

It is back firing into the intake. If you are sure that your spark plug wires are in correct firing order, you have a valve problem. Could be exhaust rocker has popped off. intake valve too tight. If it had been sitting along time, rust on the valve seat.
First, check compression. What is the overall pressures. If all are near but low, flakey timing chain. If one is lower than the rest, you found what cylinder it is. Then take the valve cover off that side. Check the rockers. Check for broken valve spring. Then have someone crank it while you watch to see if all are raised by the cam. If you don't find anything by that time, the head is going to have to come off.

[This message has been edited by cmechmann (edited 09-14-2020).]

COILPACK INFO (from Here)

2.8L, 3.1L, 3.4L SFI, 3.4 DOHC, 3100 V6 & 3400 V6 coil pack:

OK, I got a chance to watch the video. That's not a lifter, so ignore my previous post. As mentioned above, that sounds like backfiring thru the intake. Chances are, the spark plug wires got mixed up.

I can also corroborate what Patrick posted above, since I also have a 3.4 V6 with DIS.



Best of luck!

Well, It would be nice if the two pictures of the coil pack numbers agreed with each other, but no........there is still a problem.

They do agree with each other. I swapped the 1 and 4 on the one coil, to make the spark plug wires nice and neat. With a waste spark system, you can do that.

quote Originally posted by Blacktree: OK, I got a chance to watch the video. That's not a lifter, so ignore my previous post. As mentioned above, that sounds like backfiring thru the intake. Chances are, the spark plug wires got mixed up. I can also corroborate what Patrick posted above, since I also have a 3.4 V6 with DIS. Best of luck!

Just as an aside, could you please post a picture of your complete intake? Also, I didn't realize the 3.4 Camaro engine could be run via DIS (I thought that was the 3400) ...

The Camaro/Firebird 3.4 was factory DIS.

I don't want to derail the thread, so just a quick response. Yes, the F-body 3.4 came with DIS. It also came with sequential injection!

Also, here's a link to the intake build: https://www.fiero.nl/forum/F.../HTML/000049-14.html