Maybe,I forgot,hey positiveone does your Volvo make a ticking noise.i installed a reman d12 and it's got a pretty loud ticking noise Volvo checked the over head and said every them was fine,there was a guy on here that said his and his friends d12 also make that noise,was just wondering if that's something normal with the d12 thanks
ved12 465hp very very low mpg
Discussion in 'Volvo Forum' started by bizzzzzz1, Nov 16, 2013.
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So anybody Can tell me the part# of the turbo by the vin#? Replacing with a bigger turbo helped me on my 12,7 detroit. Dealers usually dont tell ya bcause they knoq u will be looking for smth cheaper.
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every 07 i've been around has the worst fuel economy in the history of semi's. i've only heard of one that actually hits 6. and he has a cat in his pete. inframed for 500 horse.
my first OTR company coming back on the road. bought 4 FL's. with detroits. they won't even hit 4. -
Test CAC, have the overhead run by someone who knows what they are doing, put the correct volvo fuel filters on, plug the egr cross over pipe and then see where your at. If you have 3.42 or 3.36 rears your screwed. This was a really bad spec and does nothing but hurt mpg. I just went 160 miles empty and got 9 mpg at 60 mph.
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Also, check you don't have leaks around the outlet of the turbo to the intake manifold to the CAC. There are o rings there and you will get blow by if they don't seal probably.
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what is the best rpms range for better mpg on this kind of engine? i know every engine should be driven different. As for example my old detroit i always shift at low rpms, never going over 15. I heard from others Cummins is the revers, between 15 and 16.
Maybe i do it wrong(have doubts about this ). And i got 3.55 rear with low pro 22.5 on this volvoLast edited: Nov 17, 2013
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what is the fuel pressure for these engines? at idle now i just noticed that once 1-2 minutes the rpms go down for a second and back to normal. I have so many questions and nobody answers....
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