chevy 250 leaking oil
 

Hey guys my chevy 250 smog motor has devloped an oil leak since ive had it. I replaced the side cover gaskits and they leaked worse. So i replaced the gaskits with RTV silicone and that cleared up alot of the leaking. But now it is almost what I would call "spraying" oil all over the passengers side of the engine bay. the motor is wetist down by the fuel pump. Ive also replaced the valve cover gaskit, the pcv valve is good becouse cant that cause an engine to push oil out. It is very puzzling leak have eny of yall seen enything like this? I would realy like to clear this up becouse its not very economical to add a quart once a week.
thanks guys
josh

Re: chevy 250 leaking oil
 

hmmm...I dont remember what side the dip stick is in but maybe its loose?
Maybe the distributor gasket is bad?
I just dont know. I'm not that familiar with the 250.

Re: chevy 250 leaking oil
 

All L6's leak (at least in my experience).

If it is getting oil on the passenger side inner fender, best bet is that the fan or balancer is throwing it there, which means your leak is up front. I would be looking at the timing cover, front seal in the timing cover (the most likely culprit), the valve cover seal at the very front (notorious for getting bent on reinstall), or the oil pan to timing cover joint. It is possible for the fuel pump gasket to leak, particularly if it's had a new pump and the gasket was not sealed properly. But if you have oil on the inner fenders it's most lilely the fan putting it there.

Best way to find an oil leak, clean everything up then spray it with foot powder, let it dry, then run the engine. Oil shows up real nice against the white powder, and the powder washes off easily.

Re: chevy 250 leaking oil
 

thanks guys im gonna try the using the foot powder to find the leak this weekend couse i need to get it fixed.

Re: chevy 250 leaking oil
 

if you have the time just pull the motor and give it fresh seals all around

Re: chevy 250 leaking oil
 

If it's wettest by the fuel pump, maybe the fuel pump gasket is leaking.

Re: chevy 250 leaking oil
 

Check your oil pressure sensor with the engine running. I've had more than one that developed a spraying leak out the end and it'll coat the passenger side quite well.

Alex.

Re: chevy 250 leaking oil
 

i wish i could man if i had another truck to drive rite now i would but every thing else i own is either A in a state of dissassembly, B has no tags, C wont run or, D up on blocks... lol if i could i would rebuild just rebuild the old 250 with a bigger cam, 4bbl, headers and some pistins with a bump on the top just for charictor if ya know what i mean.

im gonna look into the oil pressure sending unit maby put a copper washer on it or somthing

Re: chevy 250 leaking oil
 

my 250 was the same way i didnt have time to do the work so i got a bottle of "white shepherd" follow the directions and it will help alot trust me. it swells the and conditions the gaskets im not saying it will fix it but i used the treatment drove it for a couple days then put engine degreaser (aka 99 cent oven cleaner from dollar tree ) sprayed with pressure washe and my normal puddle turned into a few drips

it will also help you locate the problem