bluish smoke in first gear only

[allthrottlenobottle]

Ok so I did a search on smoking problems but I cant find out what it is. Maybe you guys could help.

91 240. I just changed the PCV and oil/filter. The car runs strong and maint. is now up to date. But I get a little puff of bluish/grey smoke when I go from idle(like at a stoplight)to accelerate into first. No smoke in any other gear and it only happens if I idle for a couple minutes. I've talked to a nissan mech. and he says it could be a bad injector. I've already replaced (band aid fix)one injector and the problem went away for awhile but I'm starting to think it might be oil blow by.

I also get a bit of a hesitation @ higher RPM's. Wonder if it's related to the same prob.?

Has anyone had this and any info is greatly appreciated.

[quiksilvia]

blue smoke is oil burning, gray/white smoke is coolant, i dont know how that could be an injector, but it sounds like u have a bad head gasket if oil and coolant are in the combustion chamber, do a compression and leak down test to know fo sho

[allthrottlenobottle]

but would that only happen in the holeshot? because it doesn't happen between any other gear changes or throttle up,only from take off. But i'll check that out ,thanks

[man2199]

Sounds like you have a valve guide seal leaking or a headgasket problem. At idle oil builds up in the cylinder and when you put a load on the engine i.e. first gear, you then blow it out the cylinders.You may see it in all gears when the leak gets really bad.

[s13sr20chris]

those things wear out the rings on a regular basis.

[allthrottlenobottle]

I looked at the procedure for replacing the head gasket and there is alot of parts to remove for doing it. I might as well buy all my cams,lifters valve springs,etc. and rebulid the whole engine at the same time. Just cant decide if I should build a turbo ka or swap for a sr20. I've also thought about doin a sick swap 4 a rb26 but cost on that is high cause in canda here we pay alot for parts.

[lbrowne]

Buy a scrap yard KA, build up while its out on the workbench which would make life REAL easy, build it for turbo if you want...

Then drop it in once ready

Thats the route I'd like to go. I get a small bit of blue if you jump in the car and try to go right away. once the car is warmed up shes fine. She has a bit of blowby in the crank....maybe a bad ring?

[quiksilvia]

hey l browne-you should buy me ka and build it for ur car

[s13sr20chris]

ka24 rings are actually made of compressed toenail clippings.

[lbrowne]

shipping from there to here would ludicrous

how much you sellin the engine for?

[allthrottlenobottle]

hey ibrowne I just talked to a friend of mine and theres a place in calgary called Yoko used engines and trannys. I'm gonna call to find out about used sr20's. Ever heard of them or talked to the guys there?

[quiksilvia]

$400 for motor, transmission, any other parts u need i might have, ecu and harness, but if u dont need the ecu and harness id say 3 large

[lbrowne]

shipping to hear from the states for an engine would be $$$$$$$

allthrottle: I haven't heard of them nope, haven't really looked into SRs much for local purchase (well kinda local )

edit: 400 bucks for the motor and transmission, or is that the shipping??

[quiksilvia]

400 for motor transmission and ecu/harness