engine blown?
 

How can I tell if my engine is blown? It has very little compression, and we haven't been able to get it started since I first got it.

engine blown?
 

sounds like its blown,i have an old os that has almost no compresion and it will start though,what motor is it?

engine blown?
 

.15 FE

engine blown?
 

hpi right? i dont have alot of exp with that motor but i would advise a rebuild if the compresion is low,should only cost around 40$ for piston an sleeve

engine blown?
 

that would fix it?

engine blown?
 

it should,without seeing it its hard to say but if it has low compresion yeah thats definitlly part of it it should still start though,you sure of needle settings?

engine blown?
 

to much money is needed for this damn car.

engine blown?
 

lol its not a cheap hobby but its fun!

engine blown?
 

mad fun but they should make an rc car for the people on a low buget...I.E me...lol...parents wont pay for any of it.

engine blown?
 

They do.....at Radio Shack or Walmart. lol

engine blown?
 

This is true. If one isn't familiar with the engines used in these cars and does the wrong things, it could be a very expensive hobby. Typically if the engine is difficult to start, doesn't idle well and the compression is low, the engine is pretty much worn out. At this point it must be rebuilt. If you are having much trouble starting a brand new engine, it is probably your lack of skill and ability. Engines that are new shouldn't be worn out or "blown" (lol). I have three .15 FEs. Two of them have different stages of porting and one is "stock". The engines are quite simple to start and tune because of the one-needle carb (stock). They will also last a long time if they are maintained well, are not abused and are run with a fuel that has sufficient oil.

engine blown?
 

E-mail this guy if you want. He may be able to help you for $23. He has no complaints and has done hundreds of these jobs. [email protected]

engine blown?
 

If I were you I'd get a new engine. I have the .15fe. It just is all out slow. But, since your budget seems tight, you might want to just get a new piston/sleeve.

engine blown?
 

nvm guyss I got it started and for some reason the compression came back :confused:

engine blown?
 

Great! Hope everything's OK!

engine blown?
 

I have a .15 SS too from HPI...I need a tuned muffler and engine mounts tho...the guy said that the ones on the car now wont fit my engine and muffle wont fit either...according to him.

Compression
 

You should be able to put your thumb over the top of the sleeve (with the head off of course) and rotate the engine, it should push your thumb off if it has good compression. It wont throw you across the room but should just puff it off. You will feel the pressure.

Also with the head off the piston should push the sleeve up out of the case when you rotate the engine over. If the piston goes to the top of the sleeve with ease then back down, its time for a new piston and sleeve.


Dbow

engine blown?
 

Today we had it running and then it cut out...when we tried to start it again the had no compression what so ever...but then when we got home the compression came back...any clue to why its doing this?

engine blown?
 

Maybe your over heating it being too lean??

engine blown?
 

I know ima sound like a n00b when i say this. But what way do i turn the needle to make it richer?

engine blown?
 

To make it richer you must turn the high speed needle counter-clockwise. Just like un-screwing a screw, go "lefty-loosy" (sorry, kinda a childish memory when wanting to unscrew something, lol). Everytime you experiment with the richer settings, just turn the screw counter-clockwise about 1/4 of a full turn.

Have fun,
Kevin

engine blown?
 

where the needle is...the thing its sitting on is loose...is this a problem?

engine blown?
 

Are you talking about the Carb that is loose? Or what? I really cannot help because I do not know what is loose, but I can tell you that really nothing on your engine should be loose.

engine blown?
 

like where the needle is...the thing that it sits on...not sure else how explain it....well thats what is loose.

engine blown?
 

Is it large? Do you know what the carb (or carborateur) is? Or, is it like a nut? Does it look like it is possible to tighten?