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Old 05-29-2014, 02:45 PM
auditechjs auditechjs is offline
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Join Date: Oct 2013
Location: Greenwood Lake, NY
Vehicle: 1984 245 D24 M46
Posts: 5
Default '84 245 D24 M46 runs rough/white smoke.

I recently picked up a D24 245 for cheap. 301k on it. It's my first Volvo diesel. It takes quite a while to get started, and once it runs and warms up, it will hold an idle(barely), and it runs very rough and smokes white. Smells like diesel smoke, not coolant smoke. Once it gets up to speed, you can still feel the engine running rough. Smoke isn't really noticable at highway speeds. Gas pedal is basically an on/off switch. I knew these things were slow... but not this slow. Any help would be greatly appreciated.
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  #2  
Old 05-29-2014, 03:53 PM
Hanomag Hanomag is offline
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Join Date: Jan 2014
Location: Kennewick, WA
Vehicle: 1987 Volvo 745
Posts: 29
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Hey there. The engine could be very tired but it does sound like a possible fuel issue. Change out the fuel filter and see if the air filter is in good repair. The nice thing about a diesel is that once you get the fuel and air the ignition is all handled by the compression which makes it simple. Also check the fuel lines for any leaks as a very very small leak can make starting difficult and running after a start not much better because it will lose the prime that is extremely important for it to run properly.

Cheers!
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  #3  
Old 05-30-2014, 12:53 AM
745 TurboGreasel 745 TurboGreasel is offline
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Join Date: Sep 2012
Location: Freedom CA
Vehicle: 85 745, 84Suburban 96Ram
Posts: 509
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Quote:
Originally Posted by auditechjs View Post
I recently picked up a D24 245 for cheap. 301k on it. It's my first Volvo diesel. It takes quite a while to get started, and once it runs and warms up, it will hold an idle(barely), and it runs very rough and smokes white. Smells like diesel smoke, not coolant smoke. Once it gets up to speed, you can still feel the engine running rough. Smoke isn't really noticable at highway speeds. Gas pedal is basically an on/off switch. I knew these things were slow... but not this slow. Any help would be greatly appreciated.
Using water instead of coolant masks the smell?
Steady miss?
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  #4  
Old 05-30-2014, 04:00 AM
auditechjs auditechjs is offline
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Join Date: Oct 2013
Location: Greenwood Lake, NY
Vehicle: 1984 245 D24 M46
Posts: 5
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Quote:
Originally Posted by Hanomag View Post
Hey there. The engine could be very tired but it does sound like a possible fuel issue. Change out the fuel filter and see if the air filter is in good repair. The nice thing about a diesel is that once you get the fuel and air the ignition is all handled by the compression which makes it simple. Also check the fuel lines for any leaks as a very very small leak can make starting difficult and running after a start not much better because it will lose the prime that is extremely important for it to run properly.

Cheers!
Thanks for the advise. The fuel filter looks very new, and I believe the previous owner said it was replaced recently.

Quote:
Originally Posted by 745 TurboGreasel View Post
Using water instead of coolant masks the smell?
Steady miss?
It's not a steady misfire. It runs rough and nearly stalls, then the idle picks it up and revs high before stumbling again. Thanks for the advise guys. I'll be messing with it this weekend to try to get it to run a bit better.
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  #5  
Old 06-02-2014, 06:15 AM
R.Mojica R.Mojica is offline
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Join Date: May 2013
Location: Rockland county, NY
Vehicle: 85 745 D24Tic M46
Posts: 190
Default

where is a good site to find valve shims?
__________________
99 Ram 2500 24V Cummins 199k
85 745 TD M46 170k (silver)
85 745 TD M46 251k (white) Holset HY35, 4" turbo back, n/a intake manifold, intercooled, GTD nozzles set to 2400psi @18psi. super pumped
86 745 TD auto 254k sold
Several other current gasser Volvos.
67 122S 72k (barn find)
89 760 TIC for sale non running.
93 850 5spd 396K.
94 850 Turbo (race car) 12.55@112.4
95 850 T-5R wagon yellow 199k
04 V70R Titanium/Atacama M66 245k
04 S60 2.5T awd 255k
06 XC90 V8 305k
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  #6  
Old 06-02-2014, 01:35 PM
745 TurboGreasel 745 TurboGreasel is offline
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Join Date: Sep 2012
Location: Freedom CA
Vehicle: 85 745, 84Suburban 96Ram
Posts: 509
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Anyplace that works on VWs.
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  #7  
Old 10-23-2014, 08:52 AM
R.Mojica R.Mojica is offline
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Join Date: May 2013
Location: Rockland county, NY
Vehicle: 85 745 D24Tic M46
Posts: 190
Default

Turns out IP was way out of time. Runs well now. Almost no smoke.
__________________
99 Ram 2500 24V Cummins 199k
85 745 TD M46 170k (silver)
85 745 TD M46 251k (white) Holset HY35, 4" turbo back, n/a intake manifold, intercooled, GTD nozzles set to 2400psi @18psi. super pumped
86 745 TD auto 254k sold
Several other current gasser Volvos.
67 122S 72k (barn find)
89 760 TIC for sale non running.
93 850 5spd 396K.
94 850 Turbo (race car) 12.55@112.4
95 850 T-5R wagon yellow 199k
04 V70R Titanium/Atacama M66 245k
04 S60 2.5T awd 255k
06 XC90 V8 305k
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