CTD shaking/vibrating... DV's?

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I don't know how many of you guys know 12V's but I have a 94.... The truck in my sig... When i bought the truck I noticed that the truck would start shaking or vibrating heavily in 5th gear when i get down around 40 MPH. I figured it was just because it was lugging it slightly. When i pushed into the pedal a little bit more it would clear up and power through it. I recently put 75 HP injectors in the truck from DDP and it has gotten a little worse. it will do it even at 45 MPH and when its cold even at 50 MPH, but it doesn't only happen in 5th gear now either. In 4th you can sometimes feel it but not as severe. It also seems to cackle a lot in the lower RPM range from around 1000 to 1400 but i think the cackle is just because of the exhaust that I am running... I remember hearing somewhere that Delivery Valves helps take away chatter (shaking/vibration?) with bigger injectors and didn't know if this was the same problem that they were talking about because it happened BEFORE i had my injectors too... it makes the truck more of a nuisance to drive, especially when the truck is colder. Any personal experience or knowledge is greatly appreciated!

Thanks
 

ramhunter9

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Struggling for fuel , you need a lift pump . Bigger injectors are going to make it worse ... If not kill the stocker . Sounds like the stocker was going south anyway .

I think I told you this at one point :Wedgie:

Now this is just a guess from riding in your truck . Putter putter sputter sputter ..I NEED FUEL
 

Mopar1973Man

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ramhunter9

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What I said but in a more technical term ^:Wedgie:
 
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Then wouldnt it get worse in the higher RPM range instead of clearing up? that doesnt make sense...
 

ramhunter9

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With a load there is more need for fuel .

Your truck NEEDS more fuel in lower gears than top end . Taking off from a dead stop requires more fuel as the truck / motor needs to get going . At top end it already has the mass moving so less fuel is needed .
 

ramhunter9

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Greyish last time I seen it
 

Rogan68

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That's definitely a fuel starvation then. Mine smoked gray when the lift pump was going out, and stuttered like hell.

per Tapatalk on my EVO
 
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