Whinning noise from engine..??

[nebraskafandb]

So I was recently working on putting a new clutch in..well long story short the apartment I live in wouldn't let me work on the car in the garage anymore so I took it to a mechanic to finish the job. The clutch and everything is great but since we removed the intake manifold he had to put it back on and now the car runs a little rough, it also makes a loud whinning noise..the best way I could describe it is like a something dying lol..could this be a vacume leak?

I also had the fuel pump and filter replaced along with the o rings for the injectors..

[jlevie]

The rough running and noise suggest that you have an intake leak. Have a smoke test run to find out with the leak(s) are.

[SpecM]

why did he remove the intake manifold?

Its not that hard to remove the starter with it on...

[nebraskafandb]

lol I was an idiot an removed the intake manifold, I thought it would be a good time to clean it.. and how do you go about doing a smoke test?

[nebraskafandb]

Also when I removed the intake manifold I realized there was no gasket..I thought it was weird but it ran just fine without one so I was thinking maybe I should try taking it off again and running it like that..just an idea

[Jaxx_]

wait, there's no gasket on there now?

if you put one on it's still possible it got pinched or something when you put the mani on the head.

[nebraskafandb]

no there is a gasket on there now however there wasnt one on there before I did the clutch and I had no problems then

[Jaxx_]

uh... an intake manifold gasket might help your vac leak.

[jlevie]

There is definitely supposed to be a gasket between the intake manifold and head (and seals on the oil return tube).

[nebraskafandb]

there is a gasket in there right now but should I pull it off and put some kind of gasket sealent in there as well?

[jlevie]

When installing the manifold you need to use new gaskets. No sealant is needed.

[delatlanta1281]

Make sure you replace your gaskets with new ones as described above, as well as checking and re-checking each nut is tourqed down correctly. i believe there are 12 nuts. It's easy to overlook one. Are you getting a check engine light at all?

[FLG]

Grab a can of starter fluid or carb cleaner, spray it around the intake and see if the engine starts to run a bit better at itlde, if it does you have a leak.

[nebraskafandb]

I did use a new gasket for the intake manifold and ordered a throttle body gasket today. I also ordered a new intake boot. When I spray the carb cleaner the idle does go up and seem to run better when I spray it near the intake manifold but like I said there is a gasket in there and i double checked that I torqued down all the bolts...any other ideas??

[jlevie]

If the engine note changed when you sprayed carb cleaner around, there is an intake leak.

There are several problems with trying to locate intake leaks with carb cleaner. One is that it isn't highly directional and thus it is difficult to pin point the leak. Another is that it only works if you can get the fluid directly on the leak, which is impossible for some of the locations. Another is that it only works on leaks close to the intake. And it only works on daily large leaks. Since several small leaks add up to a big leaks you may not find all the leaks with carb cleaner.

Have a shop run a smoke test on the intake and crank case. Properly done that will find all leaks and it will find leaks in places you never think to check.