Faeflora

iTrader: (2)

Argh oh please help me #3.

So the car idles and **** and timing apparently is aok. Only problem is that it idles roughly and it runs roughly. Not super mega rough but it burbles like it's ******* cammed and it's not.

Stock cams, hydra, runs the same, rough, no matter what the AFRs are, no matter what rpm, no matter what load. AFRs are ok, all sensors appear to be reading properly. Runs rough warm or cold, all the same.

WTH?

I'm pretty damn sure I have spark on all 4 cylinders since it doesn't sound like a freight train anymore.

Any ideas of **** to check?

This is for my 03. If I don't get this **** together I won't be able to run at my own dyno day and many tears will be shed. by me :(

Faeflora

iTrader: (2)

Oh yah, and this is with my hated hydra 2.6. Spider sense says this is not a hydra issue though.

y8s

iTrader: (8)

vvt is in full retard?

timing is above 10 BTDC at idle?

AFR is between 13 and 14.7?

Faeflora

iTrader: (2)

Yes to timing above idle and yes to afr.

No to vvt. Unpluggong the solenoid will lock full retard right?

dustinb

Pull spark plugs / coil plugs one at a time while it's running. See if it affects idle.

Faeflora

iTrader: (2)

And if one doesn't affect idle it is fu'd correct?

Could this also be caused by old gas? My car was sitting wiht the gascap off in my garage for the past 5 months.

dustinb

If there's no difference then that means there's no spark. The motor will get visibly worse when you stop one cylinder from igniting.

And yes, it's possible it could be old gas.

Faeflora

iTrader: (2)

Its got about 2 gallons left in there. Drain? Or fill. I hope not drain.

thymer

iTrader: (5)

Gas cap off? You got some serious moisture in that tank bro. The lazy side of me says to fill 'er up..

y8s

iTrader: (8)

unplugging VVT means full retard (ie "safe mode")

Faeflora

iTrader: (2)

Welp the problem was fixed by filling the tank up with fresh 93oct shell. Now it idles decntly smotohly and runs decently. The engine still osunds like **** though, like it is knocking- well like something either top or bottom end was knocking. I don't lke it so I left the car at the buikder for the weekend. I did drive it around a while though and pulled 30in of vacuum a bunch on 5psi max.

It idles around 18inches but maybe thatwill get better with time?