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RD28T GQ Excessive black smoke

4257 Views 7 Replies 7 Participants Last post by  SeanGQ2.8
Hey guys i'm asking this on behalf of my friend as he hasn't got the internet and needs a little help. I have no experience with the 2.8 so i best ask. And yes i tried the search with no luck in any threads i looked through.

My mate just bought a 97 GQ 2.8L Turbo w/400,000km, he got it as a run about car but has soo much black smoke pouring out. Changed the air filter and it helped slightly. Pump is in good cond, injectors cond unknown so will pull them and put new nozzles and shim them.

But it still seems to be overfueling and down on power. has anyone had any issues with these motors and smoking? I mean i dont mind a little black smoke, but Cummins 24valve redneck smoke is a little too much.

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get a pressure test on the turbo. it may be not boosting properly. if boost is too low, the right fuel/air mix will not happen. it has the same symptoms of over fueling when it is actually lack of air...same difference
1 - 1 of 8 Posts
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