T-Rex of America

fina920 · Contributing Member Joined: 07 Jun 2009 Posts: 84

while driving at around 5,000 rpm rex is bucking like crazy. Most notable on highway in 6th gear. I do not know where to begin looking. I have new plugs in it so do not think it is that. Any ideas would be great.

getmad2009 · Joined: 11 Oct 2009 Posts: 668 Location: st colomban

what years???

if it's fuel injected, check the hi press pump in the back, we had a similar problem on a 2009.....
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WAYNE 07 · Posted: Thu May 27, 2010 1:08 pm Post subject:

Check the small clear tube from the ram air to the carbs and check to see if the black plastic piece that it goes to is cracked.
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fina920 · Contributing Member Joined: 07 Jun 2009 Posts: 84

this tube appears to be fine, but I do hear back firing coming from that side ever once in a while when down shifting. The tube seems very short. How do you replace this tube? Where do you get it from?

My rex is an 03 non fuel injected.

J-rex · Posted: Thu May 27, 2010 6:33 pm Post subject:

It's just a clear piece of hose home depot has it i'm sure... or even a pool supply store might be able to sell you something that small.

loki · Joined: 15 Jun 2009 Posts: 58

Dirty carbs!if u are getting carb backfires and rough running its usually after it sits for awhile or after u fill up!pull em and clean em:(

Geezer · Posted: Thu May 27, 2010 10:23 pm Post subject:

I just had one of my carb sync port covers crack and come
off. Thought I had bad gas, ran like sheet.

Take a visual of them between the carb and manifold, ya
just never know.

Geez