additives are known to eat away at rubber n such. so it may not be a good idea to dump it into the fuel tank. but a nice top engine cleaner (like sea foam) wouldnt hurt to do every 100k miles.

 

Sea foam recommends every 2 thousand miles on the bottle.

 

Be careful on putting it in the gas tank of older Preludes. I had an 1986 way back in the day and I put it in the gas tank....worked so good it loosened up all the rust in the tank which in turn clogged the dual carbs!!! $1500 for new carbs!!!

 

Im gonna go out and get some right now. So you say its ok to pour half of the can in to the manifold? Wouldn't that do bad things at that amount? And half in the gas tank eh. We'll see if its good as you guys say it is.

 

just pour slowwwwwwwwwwww and little at a time

 

Ok, just got done with everything. Though I think I may have sprayed that stuff a little too fast in to the line, there were a few times it almost stalled. Anyways, after waiting for 5 minutes I restarted the engine, didnt see any thing big and black, but the steam coming out of the pipe seamed to be more than before, and I could smell that stuff in the air. Afterwards took the car for a ride, seems a bit better. Six bucks well spent.

 

seafoam isnt a spray........did u get the right stuff? Take a pic of the bottle. It should be white.

 

I didn't feel like retyping my experience with seafoam, but here it goes:

https://www.hondacivicforum.com/m_87...m/tm.htm#87839
https://www.hondacivicforum.com/m_11.../tm.htm#116495
https://www.hondacivicforum.com/m_87...m/tm.htm#87532
https://www.hondacivicforum.com/m_67...m/tm.htm#68206
https://www.hondacivicforum.com/m_52...m/tm.htm#52776
https://www.hondacivicforum.com/m_50...m/tm.htm#66516

as you can see, it has kept my car running strong all this time and has fixed a lot of rough idle problems.

oh and yes there are different types of seafoam products. I normally just use the spary for the TB and other stuff and the liquid bottle for the "in tank" and in pcv hose treatment.

 

Crap! I think I bought some wheel decreaser and sprayed that in! shoot... JK , no I got the right stuff. I unkooked the vac line from the FPR, took the top from some spray bottle, stuck it in to the seafoam can and sprayed that in to a line. Other wise the hose was too small in diameter to pour anything down. Thanks for all the help Pete, you are a good man.

 

lol andrey i seriously think you got the wrong stuff. The seafoam im talking about comes in a can that you take off a top and pour it out. U cant fit a spray top on it.