350 cid tpi motor has been rebulid and light blue smoke is comming from the tail pipes. #24 accel fuel injectors were installed along with a comp cam #08-304-8 specs are 210/220 duration, 500/510 lift along with 1.6 roller rockers. cam has 114 degree center line. could this blue smoke be cause by the lack of computer mods or a sensor or mechanical reason like heads or piston rings.

 

Blue smoke is burning oil. There is a multitude of problems that could cause oil burning. The first order to me would be a compression test to determine if it's bad rings or valve seals. Who did the rebuild? Did they clock the rings correctly at 120* intervals or just install them with no regard to orientation, this could cause compression problems and possibly oil burning. Good compression on a new 350 should be about 190+ psi. Were the heads rebuilt. Does it smoke all the time or just start up? Does it get worse under power or what?

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92BLKL98
'92 Black Z28 Hardtop w/Harwood 2" cowl ind. hood Modded 700R4, MSD
Ignition, March Underdrives, TPIS Fastpak, Ram air w/gutted filter box, SLP Prom, Flowmaster, & free mods, removed cats, Amsoil synthetic lubes, CE SFC's, Edelbrock STB,Spohn TA,Roadtech LCA's and Panhard Rod, Energy Susp., PST polygraphite bushings, KYB Shocks.

[This message has been edited by 92BLKL98 (edited August 02, 2002).]

 

i assembly the engine. all the engine machine work was done by kendrick racing. rings were installed 120 degrees apart. i drove the car tonight, it smoke at start up, but, clears up a bit under power.the heads also were rebuild, but at another machine shop. i will do a compression test tomorrow. i will keep you posted.