12 States to ban diesel vehicles

[Hay Dude]

Pickup trucks with engine brakes? What could go wrong? For starters, there are already plenty of idiot CDL drivers making noise in situations where they do not need to. Using the brake to bring down the engine rpm's while shifting at 2am in residential neighborhoods comes to mind.

So nobody's allowed to have Jakes because of a few idiots?
Tend to agree with you reluctantly

 

[not2old]

I was under the impression that a jake brake was a compression release used on a two stroke engine. Worked excellent on my old dirt bike. Modern trucks have an exhaust brake on four stroke engines that works very well on my 2024 F350 without being too noisy. Don't think two stroke diesels have been used for years. Am I wrong????

 

[nisaacs]

They are used on most large displacement diesel engines, 2 and 4 stroke. Exhaust brake, mostly smaller diesel vehicles.

 

[nisaacs]

Pickup trucks with engine brakes? What could go wrong? For starters, there are already plenty of idiot CDL drivers making noise in situations where they do not need to. Using the brake to bring down the engine rpm's while shifting at 2am in residential neighborhoods comes to mind.

What comes to mind for me, are the Harley noise makers.

 

[Dftodd]

A pickup truck with Jakes would be pretty amazing….
I will say my 2-stage exhaust brake with transmission braking works very, very well.
My original 5 year old brakes were still at 50% in April-2025 with 60,000 miles on the odometer.
Cummins engines are heavy.

The new dodge diesels come with a Jake brake. At least our 2023 5500 service truck does.

I tested the braking with it off and then on, and it does make a difference.

 

[Jstpssng]

The problem isn't the Jake. Rather, it's the idiots misusing them. There is no need to come up on a traffic light blipping the throttle with straight pipes, just to be obnoxious. Rather like the above mentioned Harleys.

 

[DK35vince]

The problem isn't the Jake. Rather, it's the idiots misusing them. There is no need to come up on a traffic light blipping the throttle with straight pipes, just to be obnoxious. Rather like the above mentioned Harleys.

Exactly.
I run a Mack Pinnacle at work with a Mack MP 8 engine.
Exhaust is so quiet you can barely hear the engine Jake brake.

 

[nisaacs]

The new dodge diesels come with a Jake brake. At least our 2023 5500 service truck does.

I tested the braking with it off and then on, and it does make a difference.

No, just exhaust brake.

 

[Hay Dude]

The new dodge diesels come with a Jake brake. At least our 2023 5500 service truck does.

I tested the braking with it off and then on, and it does make a difference.

Its a real Jacobs brake?
I’d doubt it.

BTW: Cummins purchased the Jacobs Brake company

 

[Too many Kubotas]

The new dodge diesels come with a Jake brake. At least our 2023 5500 service truck does.

I tested the braking with it off and then on, and it does make a difference.

Its a real Jacobs brake?
I’d doubt it.

You're doubting correctly.

Rams have exhaust brakes, and quite effective ones, but that's entirely different from a Jake brake.