Saturday, December 25, 2010 - 01:27 pm, by: Hakan Pasha(Hakanpasha)
What a way to spend the holidays but here it goes...
The last couple of days I have been slowly working on changing a few things on the engine: adjustable cam gears, new spark plugs, new coil pack connectors and new rocker cover gasket. Also changed the ventilation hoses and the valve (RH cam cover) as they split when trying to remove them.
Simple enough job, waited overnight for the gasket goo to cure and started the car this morning. It started OK then started making spluttering noises and was idling really badly and hesitating as if it was about to stall. Took it out for a drive, it drove OK (barely) still hesitating and fluttering. WOT - the same deal.
I've checked over some threads on the forum - checked over the hose on the rear of the engine etc. Everything seems connected up.
Can't seem to find what the problem is...
I do recall not paying much attention when I changed over wires for the first clip (front of the engine) in terms of their orientation. What effect can it have they aren't put into the connector housing the right way round?
Is there anything else I should check over? What are possible causes for this kind of misfire/hesitation/spluttering?
Sunday, December 26, 2010 - 03:41 am, by: Chris Prak(Carizma)
map sensor hose? otherwise, yeah, ignition problem. disconnect the coilpacks one at a time. the one that has no difference is the one thats playing up.
Monday, December 27, 2010 - 03:50 pm, by: Hakan Pasha(Hakanpasha)
All solved now!
Checked all the ignition components again - spark plug gaps, coil packs and their resistances, coil pack connectors...
Disconnected the clips from the coil packs one at a time, as Chris suggested, narrowed the problem down to Cylinder 4. Turned out to be improper wiring orientation in the coil pack connector! Didn't pay much attention to the orientation so that's what caused this problem.
Though gotta mention the iridium's are fantastic, noticed much better ignition performance than before.
Austen, there was no vac leak noise but those hoses were the first thing I checked after doing a bit of research on the topic on this forum.
Wednesday, December 29, 2010 - 09:52 am, by: Ben Lipman(Ben12a)
Hakan Pasha wrote on Saturday, December 25, 2010 - 01:27 pm:
new rocker cover gasket
maybe when he put the rocker cover back on the top of his ole 186...
I assume he is talking about the cam covers. I still call them rocker covers from time to time. I don't recall using gasket goo on them though. The two crescent cutouts at the back where the cams are inserted might require it though?
Wednesday, December 29, 2010 - 04:35 pm, by: Hakan Pasha(Hakanpasha)
Gary Poloskei wrote on Wednesday, December 29, 2010 - 08:50 am:
gasket goo? I know this problem is solved.. but what did u put gasket goo on?
I put a smidgen on along the gasket where it comes in contact with the engine block as more of a precaution than anything else, otherwise you don't have to use gasket goo.
When removing the old gaskets I found traces of gasket goo on there from the previous owner I guess, so I don't think there's any harm in using it.
Ben Lipman wrote on Wednesday, December 29, 2010 - 09:52 am:
I assume he is talking about the cam covers. I still call them rocker covers from time to time.
Wednesday, December 29, 2010 - 08:33 pm, by: Brett Harrison(Bretto)
Would have to agree there, not to mention blocked oil and water passages, as it breaks of inside the engine. Remember this stuff is designed not to break down with oil or water. I think it has a purpose, just be careful where you use it. New rubber gaskets can be laid on dry and they will be fine, if the mating surface isn't perfect you can use loctite non hardening gasket sealer.
Wednesday, January 05, 2011 - 11:57 am, by: Layton Molenaar(Rbdestroyer)
Yea i use aviation seal on rocker (cam) covers. Especially with older cars. Its a good way to keep the gasket fresh and not harden up (rubber) with my experience. And yea for the cresent areas or akward spots its good to hold it on. Good when doin sump gasket too. Just for the oil sling you get.
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