Diagnosis needed

[currier_avfc]

my car starts and will happily drive round at low speeds but when i throttle it the engine dies....?

 

[frickenjoey]

What are your engine temps? You could be too rich or too lean. What percent of nitro are you using?

 

[alpinehyperlite]

does it bogg down than die, or rev up and die?

 

[ThunderTiger]

Instinct would tell me personally to have a look into the carburettor settings, however, We really need more than "my car starts and will happily drive round at low speeds but when i throttle it the engine dies....?" to be able to help you properly.

Does it sound like the engine bogs down, or does it cut as the revs climb ?

WHAT MAKE is the car ?
What size engine is it ? (.15, .18, .21 et al)
HOW OLD is the engine ?
what condition is the engine in?
what fuel are you using?
what fuel % is it ??

*****EDIT*****

DARN IT ALPINE, you beat me while i was typing my response! lol

*****EDIT*****

 

[currier_avfc]

the car is a hsp tyrannosaurus truck 1/10
its about 9 months old
fuel is 16% and is byron race fuel...
i managed to get it going this morning and it was bogging down again so i unscrewed the high speed needle gradually and it got better but not up to 100% performance of what it used to be. after that tank of fuel ran out it wouldnt start again so its still got a problem.... thanks

 

[MotoGod]

If it was bogging down, then that's typically running too rich and you would want to lean the engine (tighten the high speed or low speed needle). Does your engine have a low speed needle? Have you read the Nitro Tuning Sticky yet? If not....I would go start there.

Also what temps are you running in?

 

[Lessen]

Lean out your HSN (high speed needle)

 

[alpinehyperlite]

If it wouldnt start again, you might need to change your glow plug out as well.

 

[currier_avfc]

i've found there is a lot of fuel collected underneath the exhaust at the joint seam where the exhaust has been welded together as if it has came out under high pressure. Could this be a possible reason why the engine was bogging down under full throttle?
And also how do i check the temperature of the engine? i was told a long time ago that you put water on the engine or something but I'm a bit unsure

 

[ThunderTiger]

not water!! a little spit on the top of the head is a good indicator. I'll let the others explain that one.

Your best bet is to get a temp gun ($15 - $30) to check your temps.

The fuel residue is possibly residual oil from the fuel. A lot would indicate a rich needle setting, although, TBH without pics it's impossible to tell.

so, i'll say this ics-stfu:

 

[currier_avfc]

lol thanks for your help,, this is my car https://www.rcnitrotalk.com/forum/album.php?albumid=472&pictureid=2844
this is the exhaust https://www.rcnitrotalk.com/forum/album.php?albumid=472&pictureid=2845

 

[ThunderTiger]

that looks a lot like the seal is blowing a little....

BTW, I posted these pics for you in here, its easier.

Looking at the complete rig, it looks like it's a 1/8 scale rig........................

 

[2revo1maxx]

A bad exhaust leak can cause bogging, I'd say your leak qualifies as bad. Seems obvious, but may only be part of the problem.