The directions are on the bottle. If they are confusing maybe you shouldn't be working on your own vehicle. It's not rocket science, you can either pour it in to the brake booster hose, PCV hose or throttle body, any vaccume hose that goes into the upper intake will do the trick. Getting the engine to stall will be dependant on the amount of air that is being fed into the engine. The only way to get a huge quantity of SeaFoam into the intake through the TB is to open the butterfly valve and let in a huge quantity of air as well. The engine will rev and burn the Sea Foam, on the other hand you can dump alot of fluid into the brake booster hose and flood the engine without providing sufficient air through the TB to burn the SeaFoam and stall the engine. You can debate which is best but both will work just fine. Even on my Saturn which has the TB oriented horizontally I was able to crack open the butterfly and gently pour Seafoam out of the bottle so that it got sucked up through the intake, ultimately I found it was easier to use the PCV hose, looking at the way the intake is setup on that vehicle I think I got better distribuiton through the PCV hose, but either way would have worked.

 

No offence to anyone but I am from the Canadian side of this and I have worked on cars of various kinds since I was in high school,and I help a friend of 20 yrs on his race car(several track championships under our belt too) so i do know how to work on cars. Now may be just me but i have never heard of a "cleaner " that you can pour into the oil, gas and intake too. Just seems odd to me. I think it scares some people to put it in all three areas and doing it wrong.

 

The reason we are on this forum is to share thoughts, expieriences and knowledge about the various blazer models and engines, as well as other areas of the vehicles and subject matter. It is not suprising that you have never heard of cleaner for your oil. You,Me, or anyone else on this planet doesn't know everything. Thats why we have the ability to think, reason and remember things. Good luck in the future.