Slow acceleration after intake and exhaust

Methodical4u · 11-14-2011, 06:06 PM

Quote:

Originally Posted by henry0844

well, I fiddled with the intake clamps and found a couple that didn't look like they were tight enough around the throttle body. so I tightened them up and moved them to get a better seal around the piping. car seems to b driving quite a bit better. I will reserve judgment until I put a few more miles on her but this may have been the problem all along. so anyone having similar issues this may b your problem.

I thought you had tightened them more already?

henry0844 · 11-14-2011, 06:32 PM

Quote:

Originally Posted by Methodical4u

I thought you had tightened them more already?

I tightened the other clamps near the maf sensor. I was waiting til the weekend to mess with the other clamps and replace them with the spare tbolts I had.

wstar · 11-14-2011, 07:04 PM

Another way you can check for vacuum leaks in the intake tract (PCV hoses, etc, aside from the main intake tubes and throttle bodies) is to spray something volatile like starting fluid nearby the suspected connection with the engine running. If there's a vacuum leak the engine will suck in a bit of the aerosol starting fluid and you'll hear the idle speed change from the mixture change. Just be careful about how much you spray, hot metal surfaces, etc. You should have a fire extinguisher on hand in your garage anyways

henry0844 · 11-14-2011, 08:25 PM

Quote:

Originally Posted by wstar

Another way you can check for vacuum leaks in the intake tract (PCV hoses, etc, aside from the main intake tubes and throttle bodies) is to spray something volatile like starting fluid nearby the suspected connection with the engine running. If there's a vacuum leak the engine will suck in a bit of the aerosol starting fluid and you'll hear the idle speed change from the mixture change. Just be careful about how much you spray, hot metal surfaces, etc. You should have a fire extinguisher on hand in your garage anyways

^^ the next step if the car keeps running strange. thanks for the heads up

Methodical4u · 11-14-2011, 08:47 PM

Quote:

Originally Posted by wstar

Another way you can check for vacuum leaks in the intake tract (PCV hoses, etc, aside from the main intake tubes and throttle bodies) is to spray something volatile like starting fluid nearby the suspected connection with the engine running. If there's a vacuum leak the engine will suck in a bit of the aerosol starting fluid and you'll hear the idle speed change from the mixture change. Just be careful about how much you spray, hot metal surfaces, etc. You should have a fire extinguisher on hand in your garage anyways

Man, I remember doing that for hours when I had a boost leak on my Evo... I sprayed a little and thought I found it and then do it again and it wouldn't work and on and on... SUCKED!

henry0844 · 11-14-2011, 08:56 PM

Quote:

Originally Posted by Methodical4u

Man, I remember doing that for hours when I had a boost leak on my Evo... I sprayed a little and thought I found it and then do it again and it wouldn't work and on and on... SUCKED!

it really does suck. had a msp3 and had to do the same, was very tedious and time consuming. I'm really hoping I don't have to do it again for my z.

Methodical4u · 11-14-2011, 09:04 PM

Quote:

Originally Posted by henry0844

it really does suck. had a msp3 and had to do the same, was very tedious and time consuming. I'm really hoping I don't have to do it again for my z.

at least there aren't as many hoses and such. We have an 09 MS3 as well.

henry0844 · 11-15-2011, 03:34 PM

Quote:

Originally Posted by Methodical4u

at least there aren't as many hoses and such. We have an 09 MS3 as well.

ms3, most underrated car on the road. I loved the torque in that car, stock for stock would roll sti's and evo's no problem. went from that to the z

11-14-2011, 07:04 PM	#3 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3595	Another way you can check for vacuum leaks in the intake tract (PCV hoses, etc, aside from the main intake tubes and throttle bodies) is to spray something volatile like starting fluid nearby the suspected connection with the engine running. If there's a vacuum leak the engine will suck in a bit of the aerosol starting fluid and you'll hear the idle speed change from the mixture change. Just be careful about how much you spray, hot metal surfaces, etc. You should have a fire extinguisher on hand in your garage anyways __________________ 7AT Track Car! Journal thread / Car setup details

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