Dave02C5

Hey guys! This week I got my new cam installed and dyno tuned with HP tuners/wideband/street, etc. Runs like a scalded dog. But one question, is it normal to have a slight hue of smoke that smells like raw fuel ONLY at idle? Here is a vid of the car with some visible smoke.

cam specs are 231/242 - .617/.592 @ 112+2 LSA

https://www.facebook.com/video.php?v=10152476990526314

PS. It dyno'd 421 rwhp - 398 rwtq SAE

martysauto

It's common for a cam that size to stink at idle. I don't think a slight wisp of smoke is anything to get alarmed about.
Did you replace the valve seals with the cam install?
Does your oil smell like gas?
Do you have fresh high quality synthetic oil in it?
Have you had anyone follow you around at different speeds, load and rpm to double check the smoke?

Dave02C5

yes, new valve seals, fresh 5w30 mobil 1. any rpm other than idle has no smoke. if you're standing behind the car or following me your eyes will water though.

martysauto

My car smells at idle on cold start, not to much when warmed up. No smoke. I am running a tsp 228R 114 lsa, a little milder than yours. Did you ask your tuner about it?
Maybe some guys with similar cams will chime in.

Paul 75 L82

That's too much smoke, I think your valve seals didn't get set correctly.

ssrallyred

A cam with a lot of overlap and no cats can and will make your eyes bleed at idle standing behind it but should not be having any blue smoke. That is oil burning.

Dave02C5

since when does oil smell like raw fuel?

martysauto

The blue smoke is burnt oil. The fumes/odor is fuel. If you can live with the smell, drive it. You could put cats on it, but that would be a temporary fix. They won't be effective very long.

06x6spdGTO

Looks like a possible valve stem seal leak to me.

When you installed the new valvesprings how did you install the seals?

PS Ive ran catless and tuned cars with 252/260 621 615 109+3 cams on 370CU in Iron blocks that dont smoke like that.