Compression test... Where do i put my leads??

[gimmemud]

Hi guys, Just about to do a compression test on my 3.8l v6 and was wondering where i should put my leads so i don't do damage somewhere else. Its got a coilpack so no dizzy. Do i need to earth my leads or take them off or what??
Thanks in advance, Tim

[DJ]

Hi Tim
I always put the spark plugs back into the leads then earth the plug out ..to take the load off the coil packs not sure if this is correct or not but never had a coil pack die yet..better yet disconnect the power supply to the coil pack
now about that valley ant ( VE?? )

[Sadam_Husain]

now about that valley ant ( VE?? )

If its the one in the avatar it looks like a VC to me

[DJ]

thanks

[gimmemud]

1966 VC all original and the paint work is still very good (kept in a garage its whole life) Just had full engine recon. purrrrrrs like a kitten. suppose i better go do that compression test then.

[gimmemud]

Compression test done. all 149 apart from two which were about 152. Changed spark plugs, leads, and coil pack so looks like i'll be checking the injectors next.

[Big-AL]

thats a good start. sorry i was going to come round and help, had a squash game to play give me a text if u want to work on it tomorrow.

[gimmemud]

sweet, you know how to check injectors?

[DJ]

i'll be checking the injectors

reepco used to sell noids?? that plug into the injector plug ends dont know if they are still available but they light up when every thing was ok

[gimmemud]

cheers, DJ will have to drop in there tomorrow

[Big-AL]

my mechanic did that ... he plugged a little light into each plug and the light flashed on each time. he told me that ment the injectors were working fine.

[DJ]

thats them I think I paid about $10 for two different plug ends .. could be going to Pureora but not where everyone else goes so get that thing sorted if you guys are keen

[Big-AL]

you should just pop up to auckland tomorrow afternoon and help us fix it

[DJ]

Hay I like your line of thought now to convince the boss

[Big-AL]

http://www.vncommodore.com/forum/topic. ... =injectors - doesnt really help but might be a good website for the future

[gimmemud]

hell yes! got the beast purrin again after finding out that one of the brand new spark plugs was poked.
Was very annoyed about that and the fact that i changed leads and coilpack and an injector and missed two 4wd events. Who would a thought that a brand new plug would be faulty, suppose i should have checked that.
Making some rock sliders on the weekend and maybe a hoop roll bar thingy. And hopefully my tyre guy gets me my rims and tubes in for my new 35s. woop.

[86-surf]

So you finaly did the test.

[scs]

just because the injector is getting the pulse doesnt mean its working correctly.