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My 2 XBs won't start.

EliteScope

Member
Messages
18
Good evening to all,

Im new to the 1/5 scale world. But i just recently aquired 2 used XBs (pictured on my profile lol).
Anyways i got them about a week ago...ran them a few times with what fuel it had in them. Then cleaned them up, with some WD40 as i seen on some videos. The only area i did not clean thoroughly was the engine area since i did not want to risk messing anything up. Long story short, i reassembled both cars and went to start it. Nothing. Prime. Still nothing, so im not sure if i flooded the engine since that can be easily be done. so i went ahead and took the spark plug out(the tip was wet) took the filters off and stood the car vertically to let it drain. Which it did on just one of the car. Nothing came out of the other car.

So if anyone can give me some tips and point me to the right direction to get my cars up and running and this hobby started on the right path i would glad appreciate it. Thank you in advance
 

designed2survive

Senior Member
Messages
1,005
Location
MA
  1. Use fresh mixed fuel at 25:1 fuel oil ratio. 25 parts fuel for 1 part oil.

  2. Replace the spark plug with a fresh one. Yours may still be fine, but just to exclude it from being the culprit use a brand new one.

  3. Check to see that the needles on the carb are set properly. 1 1/4 Low Speed Needle (LSN), 1 1/2 High Speed Needle (HSN).
A) Locate the low and high RPM jets on the side of the carb - they are usually marked with a L and a H. Turn both jets completely CLOCKWISE (to the fully closed position). Do not force past fully closed!

B) Rotate the LSN counter-clockwise to 1 and 1/4 turns open.

C) Rotate the HSN counter-clockwise to approx 1 and 1/2 turns open.

Follow the procedure for starting the engine and report back.

Hope it helps!
 

EliteScope

Member
Messages
18
1- Use fresh mixed fuel at 25:1 pfuel oil ratio. 25 parts fuel for 1 part oil.

2- Replace the spark plug with a fresh one. Yours may still be fine, but just to exclude it from being the culprit use a brand new one.

3- Check to see that the needles on the carb are set properly. 1 1/4 Low Speed Needle (LSN), 1 1/2 High Speed Needle (HSN).

a- Locate the low and high RPM jets on the side of the carb - they are usually marked with a L and a H. Turn both jets completely CLOCKWISE (to the fully closed position). Do not force past fully closed!
b- Rotate the LSN counter-clockwise to 1 and 1/4 turns open.
c- Rotate the HSN counter-clockwise to approx 1 and 1/2 turns open.

Follow the procedure for starting the engine and report back.

Hope it helps!


Thanks Designed2Survive for your response
I will try your procedure. I failed to include on my post, while i was pulling on the pull cord it became harder and harder to pull, at times i can only get it up to about halfway on the length of the pullcord without raising the rear ends of my cars, and seems to get "stuck" and didnt pull as smooth as when i first got the cars. This happened on both of them while i was trying to start it up. Did that aid in flooding my engine? And if so what can i do to prevent it? Like how would i know "feel wise" that its pulling normally?

Is it safe to say that i didnt ruin my engine after all that? Thats is my main concern, since that seems to be the most expensive part to replace hahaha.

It seems i have alot to catch up on...smh, but its been a long time coming for me to finnaly be able to have one of these rc on this scale. So im excited about that.
Again i appreciate the help and quick notes.
 

designed2survive

Senior Member
Messages
1,005
Location
MA
A flooded engine will be harder to pull if the problem is that it's flooded! To rule other possible issues out:

1- Remove spark plug (it should already be easier to pull)
2- if yes , good. Now go even further and un flood the engine
3- put a rag or piece of cloth above the opening of the spark plug
4- flip the car upside down
5- continuously pull the pull start to un flood it.
6- report back with findings.
 

designed2survive

Senior Member
Messages
1,005
Location
MA
Or just pull the head and flip it upside down to get gas out of case

If by "head" you mean "cylinder head" then Big no no!

1- he's just geeting into the 1/5th scale hobby!
2- waste of a head gasket
3- no one will take their cylinder head off every time their engine is flooded
3- totally unnecessary!
 

EliteScope

Member
Messages
18
A flooded engine will be harder to pull if the problem is that it's flooded! To rule other possible issues out:

1- Remove spark plug (it should already be easier to pull)
2- if yes , good. Now go even further and un flood the engine
3- put a rag or piece of cloth above the opening of the spark plug
4- flip the car upside down
5- continuously pull the pull start to un flood it.
6- report back with findings.


I have removed the spark plugs and as you stated it was easier to pull once again. Some gas came out of one of the vehicles and very little on the other from the spark plug port. I did want to point out that there were still gas remaining in the primer bulb is that ok? If not how would i empty that out?
I also set the H and L needles back to "0" and adjusted it according to your instructions. i did notice what seems to me a normal sound when trying to start the engine, while having the spark plug off, i can feel a slight puff of air coming out of the exhaust and the pull cord pull action was very smooth.

*side note*
-I reinstalled the park plug and and tried to start the car to see if the pull issue would be gone.i followed the standard engine start up procedure, and right on my first pull, it was back to being "sticky" again and not as smooth as with the spark plug out. -

Will be getting gas and oil and spark plugs this weekend. I wont have time till then due to work schedule. I have both vehicles on its back at the moment. Would have to wait to post if that fixes start up issue. While i wait is there anything else i can check to see what may cause it?
 

Phill

Well-Known Member
Messages
2,453
Location
The Rock QLD Au
I have removed the spark plugs and as you stated it was easier to pull once again. Some gas came out of one of the vehicles and very little on the other from the spark plug port. I did want to point out that there were still gas remaining in the primer bulb is that ok? If not how would i empty that out?
I also set the H and L needles back to "0" and adjusted it according to your instructions. i did notice what seems to me a normal sound when trying to start the engine, while having the spark plug off, i can feel a slight puff of air coming out of the exhaust and the pull cord pull action was very smooth.

*side note*
-I reinstalled the park plug and and tried to start the car to see if the pull issue would be gone.i followed the standard engine start up procedure, and right on my first pull, it was back to being "sticky" again and not as smooth as with the spark plug out. -

Will be getting gas and oil and spark plugs this weekend. I wont have time till then due to work schedule. I have both vehicles on its back at the moment. Would have to wait to post if that fixes start up issue. While i wait is there anything else i can check to see what may cause it?

It's harder to pull with the plug in because of the compression.
Put your foot on the wheel to hold it down while you pull the cord.
 
Messages
13
I bet the case is filled with gas my xt did the same thing when it was new . I did everything like he said and still would not start so I went to home depot and got a head gasket took head off and drined gas out of case fired right up
 

EliteScope

Member
Messages
18
It's harder to pull with the plug in because of the compression.
Put your foot on the wheel to hold it down while you pull the cord.

I did that, and and even held it down while i pulled the cord. I decided to stop pulling when i noticed that the cord was getting "stuck" not even halfway pulled. As i stated on the beginning of this thread, this all started after i cleaned my vehicles. Then went to start it and this issue started. So being new to this scale size i joined the forum to seek assistance on how to fix it and get my cars back on track. Prior, the cars was running well. With no issues at all.
 

designed2survive

Senior Member
Messages
1,005
Location
MA
I did that, and and even held it down while i pulled the cord. I decided to stop pulling when i noticed that the cord was getting "stuck" not even halfway pulled. As i stated on the beginning of this thread, this all started after i cleaned my vehicles. Then went to start it and this issue started. So being new to this scale size i joined the forum to seek assistance on how to fix it and get my cars back on track. Prior, the cars was running well. With no issues at all.

Your engine is flooded! Keep repeating the procedure until you get all gas out.

It's normal that it easier to pull without the spark plug in. That's how it should be. If it wasn't then something other than compression is blocking / slowing the piston movement.

You are using a new spark plug, right?
 

EliteScope

Member
Messages
18
I bet the case is filled with gas my xt did the same thing when it was new . I did everything like he said and still would not start so I went to home depot and got a head gasket took head off and drined gas out of case fired right up
Your engine is flooded! Keep repeating the procedure until you get all gas out.

It's normal that it easier to pull without the spark plug in. That's how it should be. If it wasn't then something other than compression is blocking / slowing the piston movement.

You are using a new spark plug, right?


I have not purchased my new spark plugs as of yet. Will be picking it up this weekend. Speaking of repeating the procedure, how do i empty out the gas that still in the prime bulb? It seem the gas doesn't get emptied out from that area. And is it possible to pick up the spark plugs from any retail store, exp: walmart, pepboys? Or do i have to get it from an actual hobby store? Thanks again guys for all the inputs and tips. Much appreciated
 

Phill

Well-Known Member
Messages
2,453
Location
The Rock QLD Au
I have not purchased my new spark plugs as of yet. Will be picking it up this weekend. Speaking of repeating the procedure, how do i empty out the gas that still in the prime bulb? It seem the gas doesn't get emptied out from that area. And is it possible to pick up the spark plugs from any retail store, exp: walmart, pepboys? Or do i have to get it from an actual hobby store? Thanks again guys for all the inputs and tips. Much appreciated
Don't worry about the primer bulb
If you REALLY want to empty it just lift the fuel line out of the tank and pump til empty
You should be able to get plugs almost anywhere
 

EliteScope

Member
Messages
18
Don't worry about the primer bulb
If you REALLY want to empty it just lift the fuel line out of the tank and pump til empty
You should be able to get plugs almost anywhere

Ok, speaking of fuel lines, can you give me some recommendation for getting those clear fuel lines that will work with the stock XB tank? Or i will need to get a totally different tank all together. I have seen some pictures on here that have a florecent green color fuels lines. Something like that is what i would like to put on my vehicles.
 

Hubb10

New Member
Messages
1
Hello all. Got a question on my new rampage XB. Got the car broke in and is running good. Gas tank is pressuring up when car gets hot and starts to bog down until it dies. Anyone know the cause and what modification I can make to stop this?
 

Phill

Well-Known Member
Messages
2,453
Location
The Rock QLD Au
Hello all. Got a question on my new rampage XB. Got the car broke in and is running good. Gas tank is pressuring up when car gets hot and starts to bog down until it dies. Anyone know the cause and what modification I can make to stop this?
You need to vent the tank
Google Snappy vent
 

G-Man

Junior Member
Messages
958
Location
Pittsburgh,PA
I have not purchased my new spark plugs as of yet. Will be picking it up this weekend. Speaking of repeating the procedure, how do i empty out the gas that still in the prime bulb? It seem the gas doesn't get emptied out from that area. And is it possible to pick up the spark plugs from any retail store, exp: walmart, pepboys? Or do i have to get it from an actual hobby store? Thanks again guys for all the inputs and tips. Much appreciated
I don't know where you are from but I get the NGK CMR7H from Advanced Auto Parts here locally in Pa. Under 3 bucks a plug.
 

EliteScope

Member
Messages
18
I don't know where you are from but I get the NGK CMR7H from Advanced Auto Parts here locally in Pa. Under 3 bucks a plug.

Ok thank you, theres a Pepboys about 3mins drive out near i where i am here in Va. I'll get the plugs from there
 

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