grinding noise with secondaries opened

[roland]

all i can describe it as, is a grinding noise when the secondaries open up. it usually goes away at around 4000, but i cant tell if the engine noise gets too loud or if it actually goes away. I have no mufflers and cone filter intake so it's very difficult to tell. this just started today and it came and went as the day went on. I also noticed i got absolutely horrible gas mileage, 240 miles on 13.8 gallons, which has me worried because the grinding noise was bothering me and i wasn't driving it very hard (rarely went above 3k rpm). It was an off-and-on sort of deal, if i punched it, the car seemed just fine but in first gear (and first only) acceleration up to around 5k before going to 2nd and it sounded like a grinding of some kind.

i'll try and get a video/audio clip of the sound ASAP, i tried in my car but the engine could barely be heard on the camera.

cams are not welded, and will not be until March 10th (everything on this car breaks right before i get it fixed).

rear struts are going bad on it too, which wouldn't have been an issue right now if i hadn't wrecked the front end

 

[SHOZ123]

That's all the coffee grounds (baked carbon) being sucked in as you open the secondaries.

You need one of my custom LIM with no secondaries, a no secondary tune, along with one of my custom PCV condensation cans.....

 

[roland]

that kinda makes sense, but i used seafoam on it about 500 miles ago, so wouldnt they have started breaking apart and being sucked in quite awhile ago? this just started in the last 25-50 miles.

 

[SHOZ123]

If you really think about what SeaFoam does when poured into the intake you would not do it.

 

[SASHO91]

100% Ditto!

SeaFoam FTL!!!

 

[warmonger]

1st off you dont pour it into the intake..

 

[SASHO91]

Paul was just being a bit over-dramatic....

Even still....
SeaFoam FTL.

 

[roland]

you wanna enlighten me on this, like what exactly it does to the engine itself?

 

[warmonger]

it can,if the person doing it is careless,hydrolock your engine...

 

[SHOZ123]

It will dilute the oil and may break up hard carbon. This hard carbon may on an interference engine adjust your valves for you or get locked in the rings.

Or the hard carbon may get through the engine and clog the cats.

There is nothing that any "suck the SeaFoam into the intake treatment" will do that disassembly and hand cleaning of the intake won't do much more throughly and safer.

 

[roland]

that makes sense, i kinda feel stupid for doing that now, i just didn't want to take the whole intake assembly off (which is really stupid because i'm going to get the cams welded on saturday - and intake cleaned!)