Replaced the intake manifolds on my truck yesterday. When everything was done I over looked the supply fuel line, it wasnt seated properly. As I started the truck for 5 seconds, it ran then i shut it off. I heard a leak, and it was the fuel that sprayed out over the top of the upper plenum and mostly over the back of the engine. My worry is, I replaced the intake manifolds twice in less then a year because of an oil leak comming from the back of the engine, due to inadequate amount of RTV. This time i made sure i put enough, but the fuel that spilt ran over the RTV after about 1-2 hours of dry time. I quickly moved the truck outside for ventilation purposes. Am I okay?

And how soon can a vehicle be driven after RTV has been used.

 

i guess it depends on the type of silicone you used...I always use Black rtv on everything I can because I have never had a leak using it, especially because it is gas and oil resistant...

for instance...i just did rod bearings on my 85. I used black rtv on top of the oil pan gasket, but copper seal on the bottom..I started it as soon as everything was back together, ~2 hours later, and have not had any leaks...

but when I do use it where gas will be present, I usually wait about 3-4 hours before i start it, to let the silicone cure

if the silicone was skinned over, then you should be fine. If you were to rub the silicone while gas was on it, that would thin it out, but if it just ran over it, it shouldn't have dissolved it..


someone with more knowledge will chime in, but Im just speaking from my OWN personal experience

 

i would think since its oil resistant it would be ok. Im not sure thought.
One way to make sure it doesnt leak again would be to pull it apart and use a standard gasket. I dont trust any kind of silicone. Just my $.02

 

my black stuff says wait 1 hour to set and 24 hours to fully cure. I used it when changing my rear-end gear-oil. I didnt drive the blazer for a day or two. the key is a clean, grease-free surface when using the stuff.