Hi guys. I bought my second bravo (1.6120hp diesel) a month ago. The acceleration is good but when I change gears from 1-2,2-3,3-4 and so on the car looses the torque and the acceleration is not continues. The car feels like is drowned. Is this a turbo lag or is something else? Please advise.
Technical Torque problem
- Thread starter dorosp
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Technical Torque problem
Not sure when the turbo kicks in on a diesel, but my car suffers no turbo lag when changing gear. As when I change to 2nd, 3rd, 4th etc the road speed will mean that my car needs to be revving over 2000 RPM to maintain the speed, and my turbo is already spooling pretty good at 2000 RPM. I can tell as I have a dump valve fitted and it dumps after 2000RPM. It may be that the turbo may kick in a bit later on the diesel. Try accelerating through the gears with more revs on. As you lift the clutch. Basically give it some. Not dangerously obviously. If you feel no lag then it's just a case of slight turbo lag.
I think that the turbo starts to kick at around 1800 rims. I tried your suggestion keeping the revs high and things were better. But comparing it with my bravo 1.4 150 hp petrol engine there is huge difference on keeping the pace.
That will be because it's diesel buddy. It's just not as nippy as a petrol, there's a lot more torque in a diesel allowing it to pull better at lower revs but patrols are just naturally faster. Take the bravo as an example. The 1.6 diesel turbo with 120 BHP is slower to 60 than the petrol turbo 120 BHP. by nearly 2 seconds. Yet they have the "same" power apparently. To come from the quite powerful 150 t-jet you will feel a major difference.
Could be the EGR being blocked?
Check the egr and maf...if they are dirty it would produce symptoms like you are describing.If egr and maf are ok, diesel mjet pulls better compared to tjet.
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