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#1
one A12 piston fireing wrong, please help
z0x
Posted on: 2005/7/30 10:31
I have problems solwing my 3 months misery.
Piston #2 is fireing wrong. Looks like not permanentlyfireing or not getting fuel but other 3 pistons work perfect. Does not matter if engine is hot or cold, engine works #### the same way. The compression ratio is OK, spark is OK, I changed the distributor and cables. Other 3 pistong fire wonderful. What could be the cause? 3 months of trouble, please help. I do not want to pull out the whole engine out.  
#2
Re: one A12 piston fireing wrong, please help
Freak
Posted on: 2005/7/30 11:28
U didnt mention spark plugs. Have you changed them?
#3
Re: one A12 piston fireing wrong, please help
killer1200
Posted on: 2005/7/31 16:03
sounds like a plug to me change them around and see what happens.
#4
Re: one A12 piston fireing wrong, please help
AndyNXSE210
Posted on: 2005/8/11 3:00
A new cap, rotor, and a set of NGK plugs would be a good place to start.
#5
Re: one A12 piston fireing wrong, please help
z0x
Posted on: 2005/12/12 11:44
changed sparks, distributor, rotor cap, cables, adjusted timing, adjusted valves
still fireing wrong...
#6
Re: one A12 piston fireing wrong, please help
Cable_Tie
Posted on: 2005/12/12 22:35
Does it sound better when the revs rise?
Does the plug in #2 look like it is running lean? If so, I would look for vacuum leaks. Spray a bit of CRC/WD40/INOX around the manifold, if the idle changes, you are looking in the right spot. I would suggest a cracked intake manifold or gasket.
#7
Re: one A12 piston fireing wrong, please help
pager
Posted on: 2005/12/13 2:03
hey have you had the head off may be you have a hot spot an causing pre ignition???/
#8
Re: one A12 piston fireing wrong, please help
Keith
Posted on: 2005/12/13 9:32
obviously you have 1243... right?
#10
Re: one A12 piston fireing wrong, please help
z0x
Posted on: 2009/12/16 13:01
Now I realize, I was driving more than 3 years with blown head gasket!!!!!!!!
LOL I posted this on 2005/6/7 23:40 DATSUN FOREVER!!!!!!!!!!!!!!!!!!! GREAT ENGINES!!!
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