single bad wire cause no-start?

[velox03]

hey can a single bad plug wire prevent the engine to turn? [edit: catch]
ty turns, but doesn't catch.

i changed my spark plugs out and cap/rotor. after re-installing, my
ty can't turn over. now the truck wont start.

wondering if it could be bad plug wires cuz i did see corrosion on them. bad contact maybe? will this prevent the engine to turn over?

much appreciated.

 

[GM TURBO]

Nope - it'd still turn over may just not fire. The only thing that might make it not turn over would be bad starter and/or battery dead.

 

[velox03]

hmm brand new battery. that was the initial reason why it wouldn't turn over. new starter too. less than a year... can't figure it out. it ran alright before i changed the plugs. after doing that it wont start.

 

[GM TURBO]

I'd check for anything that might have gotten knocked loose when you were changing wires. Anything that would have gotten touch i.e. cap & rotor or coil to cap wire - it would still turn over.

 

[velox03]

i'm assuming if the coil-cap wire is corroded enough it wouldn't turn?
there is rust on it. but it did turn over before... like a few hours before i changed the plugs.

 

[GM TURBO]

Well - if there is ANY corrosion it is going to cause other issues. It may start but it's gonna run like poo. But even with the coil to cap wire disconnected - it'll still turn. Taking it of is an easy way to see if you have spark

 

[velox03]

ok it'll TURN but it wont catch. sorry for the confusion.
it just keeps on turning and turning. but it wont catch.

i appreciate for your suggestions and help...

 

[GM TURBO]

Well...........................................

Now there are lots of potential problems...

Firing order.
Cap on correctly (I've seen them look on - but not really on).
Coil wire not on
Bad ECM B fuse (shouldn't have happened during a plug change - but is certainly the easiest to check an most often the cause of it.)
Lack Fuel Pressure

 

[velox03]

i have a feeling something is fried. i have no clue what tho.

after new plugs, and i started there was white smoke behind the upper CAC. close to where the 6th plug would be. but i didn't figure out quick enough to know where it was from. i could also smell, what smells like something electrical was fried.

thanks

 

[SY2932]

If you definitely have spark and fuel pressure, your ignition module is dead. Had to replace mine last spring :-? . Part number is 1048-2827 (located under your distributor cap, BTW). Be cautious troubleshooting no start conditions... It is wise to pull the ECMB fuse so that your fuel pump doesn't flood your cylinders with fuel while you are trying to start it. I know one member on here hydrolocked his motor and bent a rod as a result. HTH's

 

[velox03]

is there a way to check/troubleshoot if the ignition module is dead?

yea i was afraid i might be flooding it also. anyway to let some fuel out? can i remove the fuel filter?

 

[midnightbluS10]

Well...........................................

Now there are lots of potential problems...

Firing order.
Cap on correctly (I've seen them look on - but not really on).
Coil wire not on
Bad ECM B fuse (shouldn't have happened during a plug change - but is certainly the easiest to check an most often the cause of it.)
Lack Fuel Pressure

My money is on firing order

 

[Jimmy]

Well...........................................

Now there are lots of potential problems...

Firing order.
Cap on correctly (I've seen them look on - but not really on).
Coil wire not on
Bad ECM B fuse (shouldn't have happened during a plug change - but is certainly the easiest to check an most often the cause of it.)
Lack Fuel Pressure

My money is on firing order

:stupid:

 

[canadian]

http://www.whitetyphoon.com/firing_order.html

 

[canadian]

http://www.whitetyphoon.com/firing_order.html

printable version:

http://www.whitetyphoon.com/firing_order2.html

 

[velox03]

oh, thats a nice firing order site.

i'll double check and re-check.

thanks everyone!

 

[velox03]

i checked and rechecked the wires.
they seem to be running to the right plugs.

also might i add, when i first replaced the plugs, i did one plug
at a time. fired it up, and it wouldn't run. THEN i replaced the
cap/rotor. still wouldn't run.

i'm thinking i fried something...

one guy mentioned ignition module. there was a puff of white smoke near cylinder 6 and cap/rotor. is there any way to test it?

also i'm afraid of hydrolocking the motor. flooding the engine... cuz i've already been turning the engine... how do i prevent this, or how to i release some fuel?

much thanks.

 

[SY2932]

Welp after fighting the scanner for over an hour, got it to work. Hell, I could have typed the whole document out quicker than that and I am a slow at typing... :roll:
Troubleshooting the ignition system:

And

BTW, you can view these documents super sized on my gallery below on the last page (sorry, not dial up friendly).
If you have spark, fuel pressure and the firing order is correct, I am 99.995% sure that you need an ignition module #1048 2827 for about $40...

As far as the fuel situation goes, remove the plugs and crank it a few times to allow the fuel *if any* to "escape" via compression and evaporation. If there is fuel present in the cylinders, you should be able to smell it down around the motor after cranking it. HTH's

 

[velox03]

Mr Campbell you out-did yourself...

I must say I really appreciate it. I will spend this week/weekend trying to figure out what the heck is wrong.

I TOTALLY appreciate you spending an hour to get this documentation online.

I'll keep you posted and tell you if indeed this is the problem. I HOPE it is, then I'll be able to fix it!

THANKS so much...
Mike Chen

 

[velox03]

Updated:

Replaced all plug wires w/ taylors and cap/rotor.
Looks like the ty starts now for whatever reason.

I might have had a plug wire going to the wrong plug on
the cap. Well at least it starts now.

Now I have to figure out whats the lack of full boost.

Thanke for everyones help,
MikeC