AE.28 PRO Started/Ran Great , Not So Much Now... Ideas?

Welcome to RCTalk

Come join other RC enthusiasts! You'll be able to discuss, share and private message with other members of our community.

HPI-Killer

Axial Axle Twisting Guru
Supporter
Messages
5,282
Location
Northern Utah
RC Driving Style
Bashing
Okay so the AE 28 Pro mill that powers my MGT 4.6 well, isnt powering it anymore...

Its a mill that has seen alot of action, fuel & after-run care along with it being sealed up just so you know where it stands on usage and condition.

When I got it I rebuilt the entire pullstarter and made sure all hardware was tight, carb boot wasn't worn and cracked along with checking & zip tieing the fuel lines and tank. Reset the LSN,MSN & HSN back to factory settings and gapped the carb just right (credit card thickness gap). Dropped 30% Blue Thunder in her gullet and sue fired right up. Needle settings were perfect where they were and needed no fine tuning. After a couple speed passes I brought her in and checked the mill temp by spitting on the mill head ajd counting until it evaporated which was 4-5 seconds for 100% evap so temps were alright. First tank ran like a beast, cooled down 10-12m than dropped tank 2 in her and she started right up. All was good until about 2/3 tank use and then she started to bog at idle and 1/4 throttle punch. Before I could get a tool to it, it made a few bogging noises then shut off making what sounded like a quick faint pshh noise right after the mill died (like an air release style pshh). I immediatly checked mill head temp and still seemed kosher and let her cool due to breaking a part. Well within an hour or so I attempted to run it again and it just did not show any interest in firing up for me, at all! No leaks I can see, engine holds plenty of compression and is getting fuel as it should be.. Even charged up the rx and glow starter along with a new plug in hopes to het her started but to no prevail.

Sorry for the long story but if I dont explain the situation we will end up covering bases.of a.noobish problem so the more you know the better..
 
Last edited:

tmaxxfreek

Hardcore RCNT User
Firefighter
Messages
2,802
Location
Marshall NC
RC Driving Style
Racing
Nothing clogged? Is it still getting fuel to the carb? no leak at the gas tank?

How did the idle sound? was it normal? i would open up the idle gap with the TX and try to get it to start, and see how it acts on the bottom end.
 

HPI-Killer

Axial Axle Twisting Guru
Supporter
Messages
5,282
Location
Northern Utah
RC Driving Style
Bashing
Nothing clogged that I can see or hear, fuel is flowing too. The idle on the last tank was ruff but maintained idle, the first tank purred like a tiger, beautifully..

I'm going to tinker with it on lunch to see what I can discover.
 

HPI-Killer

Axial Axle Twisting Guru
Supporter
Messages
5,282
Location
Northern Utah
RC Driving Style
Bashing
Okay I found out that this mill has always had 20% ran through her and I ran 30%, pretty sure thats bad. And on lunch I tinkered with it and same dance, just turns and turns with no interest in starting... I have such good luck with nitro rigs... I'm about fed up and am lost on what I should do next........ GRRRRR
 

tmaxxfreek

Hardcore RCNT User
Firefighter
Messages
2,802
Location
Marshall NC
RC Driving Style
Racing
You should be able to switch %'s without any problems, minus a tuning change, i used to change mine around alot.
 

hulkmaxx

Wanna know my secrect. I'm always ANGRY!
Messages
2,193
Location
Grantsville West Virgina
RC Driving Style
Bashing
Dude I would pull the engine and take it apart clean and inspect everything. If all looks well inside and out on the mill, seal it back up make sure you install new fuel line, then give it another go. I fought trying to get a rig to run for ever. Ended up being bad fuel line in the end. Replaced line and she fired right up.
 

HPI-Killer

Axial Axle Twisting Guru
Supporter
Messages
5,282
Location
Northern Utah
RC Driving Style
Bashing
Pulled the mill out and tore it down. Everything is in good mechanical order with no visible problems. The block itself had never been sealed up so I made sure to seal everything up. Will find out tomorrow after it dries up what the news will be. What MM or size or gauge fuel line does this truck use?
 
Last edited:

Alexander_0_1

"Roads, where we're going we don't need roads"
Supporter
Messages
2,331
Location
Frog Lake A.B Canada
RC Driving Style
Bashing
You know I kinda..sorta had this same problem, my fix was I took apart the carb where the fuel inlet nipple is, and found metal shavings blocking off the pinholes
 

BillyC74

RCNT Champion
Messages
189
RC Driving Style
Bashing
You mite have to change your name to "AE-killer". :) sorry I couldn't help myself.
 

SchrodeMode

Hardcore RCNT User
Active Military
Messages
2,795
Location
England
RC Driving Style
Bashing
You should be able to switch %'s without any problems, minus a tuning change, i used to change mine around alot.
+1, I've gone from 20% to 30% and I even ran 16% (LHS gave me a Gal), all I ever had to do was retune.
 

HPI-Killer

Axial Axle Twisting Guru
Supporter
Messages
5,282
Location
Northern Utah
RC Driving Style
Bashing
Not yet, I found some new fuel line to use and the primer bulb looks mint condition still. . Took a break from it for a few hours.. Movie and lunch time!

After I clean the tank 100% is there a way to test it and make sure its nice n tight?
 

Phins Fan

Hardcore RCNT User
Messages
2,174
Location
Keeping warm in a fat roll somewhere.
RC Driving Style
Bashing
Plug up the exit side of the tank fuel line with your finger and submerge in water. Blow "lightly into the feed fuel line and look for bubbles. No bubbles = good seal. If you blow too hard you can have air escape thru the filler neck.
 

HPI-Killer

Axial Axle Twisting Guru
Supporter
Messages
5,282
Location
Northern Utah
RC Driving Style
Bashing
I meant the boot end that attaches to the carb but I just zip tied it.

I think I got it setup right, with the primer bulb do I want the arrow on it to face the way the fuel flows into the car because I'm pretty sure you do? Also when I squeeze the fuel bulb, the fuel sucks back through the line in a little bit when I release the bulb, is this normal?
 

hulkmaxx

Wanna know my secrect. I'm always ANGRY!
Messages
2,193
Location
Grantsville West Virgina
RC Driving Style
Bashing
I meant the boot end that attaches to the carb but I just zip tied it.

I think I got it setup right, with the primer bulb do I want the arrow on it to face the way the fuel flows into the car because I'm pretty sure you do? Also when I squeeze the fuel bulb, the fuel sucks back through the line in a little bit when I release the bulb, is this normal?
Yes. My MGT lets a little fuel trickle back to that's normal.
 

HPI-Killer

Axial Axle Twisting Guru
Supporter
Messages
5,282
Location
Northern Utah
RC Driving Style
Bashing
Well I dont know what esle to do... engine teardown/seal up done with new fuel lines (primer bulb arrow facing into carb) and leak tested tank.. Guess I got a new shelf queen... Grr!
 

Create an account or login to comment

You must be a member in order to leave a comment

Create account

Create an account on our community. It's easy!

Log in

Already have an account? Log in here.

Thread starter Similar threads Forum Replies Date
D Please help me decide Losi DB PRO VS Baja Rey Short Course Trucks 2
Rustyzypr Pro's&Con's rc10 b6 split trans Chassis & Drivetrain 1
Little chicken T-Maxx i have tmaxx pro 15 Traxxas T-Maxx 3
Jestertattoo Associated PRO SC10 Street tire recomendation? Wheels & Tires 4
Blackjack8289 Losi Tenacity Db Pro Problems Electric RC 2
Shivraaj0247 Losi Tenacity DB Pro build RC Builds and Projects 2
NurturantQuasar How to connect go pro to sticky mount thing? General Chaos 3
LOVE1/8BUGGIES Werks B6 pro 11 .21 high speed needle Buggy and Truggy 5
Thepitstarman Proline pro mt 4x4 motor mount inserts Monster Trucks 2
Jorrob29 Pimpin' my RCR lightning EPX Pro? Electronics 0
Thepitstarman Proline pro mt 4x4 electronics Monster Trucks 22
E Redcat blackout pro reverse issues. Electric RC 6
E Redcat blackout xte pro grinding Electric RC 0
D Dusted off my JRX Pro Se Electric RC 6
F Losi Tenacity DB Pro Tie Rod End Upgrade Question Buggy and Truggy 4
T Brushless Pro Boat Zelos 48" power loss. RC Boats 8
D Losi Tenacity DB Pro - What common parts break? Buggy and Truggy 18
Alex.M May I introduce the Official Losi DB/TT Pro Thread! Electric RC 52
FREEDOM83 Vanquish VS4-10 PRO International Scout RC Rock Crawlers 21
F Associated rc8.2e rtr or Losi Tenacity db pro Buggy and Truggy 7
Nordstromj2018 Traxxas slayer pro 4x4 won’t start Nitro RC 10
Brandon1 New Losi tenacity DB pro Buggy and Truggy 182
biggman100 Racers Edge Pro 2 questions Electric RC 0
UpliFT-RC Pro Boat Blackjack 24" Brushless Catamaran RTR RC Boats 9
S Outcast 6s M2C Pro-line Brute Body Bash Buggy and Truggy 3
T Associated Pro SC10 Upgrades Short Course Trucks 7
MrMoody New to Nitro RC - Condor Pro 1/10 Nitro RC 6
J Associated 4x4 rtr sct pro light Short Course Trucks 7
HeavyBag Duratrax Evader ST Pro Stadium Trucks 17
D3MON Pro-Line Powerstroke 6025-00 (Pre-Slash) Suspension 4
M Adjusting shocks on a Redcat Blackout xte pro Monster Trucks 2
godale03 Mavic Pro, Fly More Combo RC Aircraft 9
K Connection broken - Venon Pro Charger (noob here) Electronics 3
Jerry-Rigged New Pro-Line PRO-Fusion SC 4×4 Kit? Electric RC 11
WoodiE Pro Boat Sonicwake RTR Self-Righting Deep-V Boat RC Boats 3
WoodiE California Pro-Line Monster Truck Palooza 2018 RC Shops, Events, & RC Tracks 0
S Starter for Torq .16 (Duratrax Maximum MT Pro) Chassis & Drivetrain 0
WoodiE Pro-Line 1978 Chevy C-10 truck body Paint & Body 1
WoodiE Pro-Line Elite Light Weight Clear Body Paint & Body 0
Kompi Looking to buy a nitro pro mod chassis kit Nitro RC 1
WoodiE Pro-Line Ambush MT 4×4 monster truck roller Monster Trucks 0
E Opinions on the Sonic Pro-Stock PS.21 Nitro RC 3
WoodiE Pro-Line 2019 Chevy Silverado Z71 Trail Boss Body Paint & Body 0
WoodiE Pro-Line Pro-MT Heavy Duty Upgrades Monster Trucks 0
WoodiE Pro-Line X-Maxx Trencher 4.3” tires Traxxas X-Maxx 5
craig911 Thunder Tiger Pro .28 BD-R carb settings? Engines 2
R Proline Pro Mt 4x4 Electric RC 264
T Pro-Line Pro MT: Discontinued? Electric RC 15
EB4S2PRO Thunder Tiger EB4 S2 Pro wheels Nitro RC 5
Leo3 RJ Speed pro mod tuning. Chassis & Drivetrain 3
Similar threads


















































Top