Savage-X Engine Help

TwiztidDevil

New Member
Messages
3
Hello guys I'm new to this forum but not RC. I am having a problem with my first hpi nitro truck I was told its a savage 25 but from what I can see looks like a savage x???? Below is pictures maybe y'all can identify it for me. I traded for it and was told it ran by hadn't run in a while.....I cleaned it up fresh fuel new flow plug and within 4 or 5 pulls it started. Ran for about 5 seconds and died starts on first or second pull dies within 5 or 6 seconds or as soon as you touch the throttle. I've tried tuning with every piece of tuning info I can find, put it back to factory settings far as I could tell and it does the same thing. Maybe half a dozen times its stayed running for 30 seconds but it always dies pretty quick....... Don't mind the Cen nx-26 engine sitting in it right now. I have included pics of the stock motor as well. I'd like to put it back in and my CEN Nx-26 back in my buggy lol.
 

Attachments

  • 16107843907649222048165289622749.jpg
    16107843907649222048165289622749.jpg
    346.3 KB · Views: 10
  • 16107845096182119459484000671262.jpg
    16107845096182119459484000671262.jpg
    362.5 KB · Views: 9
  • 16107845447419169864642978467140.jpg
    16107845447419169864642978467140.jpg
    250.4 KB · Views: 11
  • 16107845808907319735184655824543.jpg
    16107845808907319735184655824543.jpg
    371.1 KB · Views: 10
  • 16107846242297732521330228016456.jpg
    16107846242297732521330228016456.jpg
    259.5 KB · Views: 11
  • 16107846429198244942292208376819.jpg
    16107846429198244942292208376819.jpg
    245.9 KB · Views: 9
  • 16107846612694800964936665515768.jpg
    16107846612694800964936665515768.jpg
    273.5 KB · Views: 8

ez2frag

Member
Messages
20
Also I would start by getting the wheels off the ground, raise the idle speed a LITTLE, the lean the low speed 1/16th of a turn. Make sure the engine is warm. Use a hairdrier or such, get it 190 if you can. Then try to get it off idle if it stalls lean another 1/16th, and try again.
 

TwiztidDevil

New Member
Messages
3
Ok guys my new carb came in the mail today 🤩 I'm totally stoked. Going to install and test it. I was thinking the carb had issues since it had been sitting for only God knows how long before I acquired it. After having no luck tuning I ordered an HPI replacement carb
 

Attachments

  • 16108294048161491915828456258497.jpg
    16108294048161491915828456258497.jpg
    175.6 KB · Views: 1

TwiztidDevil

New Member
Messages
3
Ok update. I just spent an hour after putting a new carb on it trying to get it to stay running. Using the tuning flow chart I went from way to rich to too lean and back to roughly where it should be. However the longest I've been able to keep it running is 53 seconds????? I can snap the throttle maybe 1/4 of its pull and does ok until it just dies. I have the wheels off the ground and have adjusted the idle so it doesn't just spin wheels. I'm lost its got a new exhaust gasket and the head is tight and the engine has really good compression and start on first or second pull every time
 

Jabbo

Active Member
Messages
65
Might be a leak on your exhaust, backplate or even in a fuel line. I would take the engine apart, inspect it, clean it and seal it with gasket maker.
Would be helpful to see a video of how the car dies.
Have you tried only one glowplug? Could be a faulty new glowplug as well. Also as mentioned above, could be faulty fuel tank as well.
 

Micky939

New Member
Messages
1
I’m new to the hobby, bought my first nitro buggy recently but I’m quite mechanically minded being a mechanical fitter. I could tell my engine had good compression but couldn’t get it to start or if I’d did it only ran for 3-5 seconds. I swapped the glow plug and ensured all seals were good as well as ensuring any connections on the fuel line and exhaust connections, that seemed to do the trick and its up and running. Apologies if you’ve already considered all this but thought I’d share my experience in case it helped.
I’ve just bought a used HPI Savage X off eBay, should arrive this week so I might need a bit of assistance along the way.
Thanks in advance gents 👍🏻
 

Ingolf

Active Member
Messages
84
Are you leaving the glow starter on the plug ? I would ! Till it’s warmed up
 

ez2frag

Member
Messages
20
One of the other things I have overlooked in the past is a broken spring on a clutch shoe or bad bearings on the clutch bell. The symptons were I had to idle it up to keep it from dying and some funky engagement, although if you have it on blocks it should still run. Have you checked the gasket at the head/exhaust port to your manifold pipe? I also had the pickup in the tank break towards the top so it only got fuel for about 2 to 3 minutes. Hope that helps
 

lokky

Well-Known Member
Messages
241
Raise the idle rpm using tx trim, wheels off ground, wheels spinning is fine while the engine warms up. Keep blipping throttle to clear exhaust. Try full throttle off ground, if bogs, not easily revving then lean HSN. Keep feeling cooling head til it get warm, a temp gauge/gun is useful. Pinch at cold is not same when it is warm/hot. When stopped try turning flywheel over when still warm. don't know you ambient temp but cold ambient temps make for harder starting.
 

Members online

Top