|
|
|
|
|
|
|
#1
12-29-2004, 04:00 PM
|
|||
|
|||
|
Engine bogs at 3000RPM under full throttle
Hey everybody,
My 86 300E bogs at 3000 rpm under full throttle. If I slowly accelerate it is fine, but if I floor it it bogs. I was thinking maybe OVP, or the fuel accumulator by the fuel pump. I just replaced the fuel pump this week. Died on the 101 north of LA. Any advice? Thanks, Mike 
|
|
#3
12-30-2004, 02:42 AM
|
||||
|
||||
|
Sounds like a load issue. Does it do it under hard acceleration from a standing start?
How old is the cap and rotor? Haasman
__________________
'03 E320 Wagon-Sold '95 E320 Wagon-Went to Ex '93 190E 2.6-Wrecked '91 300E-Went to Ex '65 911 Coupe (#302580)
|
|
#4
12-30-2004, 07:30 PM
|
|||
|
|||
|
Hey Haasman,
If the car is in park and I floor it it bogs at around 3000rpm, while driving it just feels sluggish off the line, but also while driving, if I floor it it bogs. If I gently accelerate it's fine, but get on the gas and no good  . Not a lot of fun. I have replaced spark plugs, spark plug wires, rotor, cap, coil, fuel filter, fuel pump. I have replaced all fluids besides oil with synthetic, including transmission. This has all been recent. I replaced all injectors 2 years ago, and the car sat up until 4 months ago.Mike
|
|
#5
12-31-2004, 12:18 AM
|
||||
|
||||
|
Does the engine feel like it is missing or simply won't rev at 3,000 RPM?
When I got the 190e, it ran very poorly. A Mercedes tech friend suggested bleeding the injectors AT the fuel distributor while the engine was running at idle. I was a bit dubious but with a fire extinguisher close at hand and lots of rags I did it. I was amazed at the amount of crud that came out. I did each line until there was no more crud. The old engine ran quite well right afterwards. Haasman
__________________
'03 E320 Wagon-Sold '95 E320 Wagon-Went to Ex '93 190E 2.6-Wrecked '91 300E-Went to Ex '65 911 Coupe (#302580)
|
|
#6
12-31-2004, 02:50 AM
|
|||
|
|||
|
Hey Haasman,
The best description is it just bogs. It doesn't seem like it misses, just either not getting enough fuel, spark, or possibly the timing getting retarded from a malfunctioning OVP. How did you bleed the injectors with the engine running? Did you unscrew the line at the fuel distributor, or at the injector? How would the crud make it past the fuel filter? Could lack of fuel to individual cylinders cause problems. Would it be possible to bleed with the key in the on position but the car not running? Thanks for the help, Mike
|
|
#7
12-31-2004, 10:12 PM
|
|||
|
|||
|
Hey Haasman,
Some more info. I replaced the OVP today without any improvement. I also unplugged the kickdown switch. The car ran the same with it unplugged as it did with it plugged in. When accelerating hard it downshifted even with the kickdown switch disconnected. I'm really at a loss with this problem. When it down shifts, the rpm's go up but the car doesn't accelerate. If the car is in park and you floor it, it hesitates between 3000-4000 rpm. If you slowly rev it the rpm's go above 5000 no problem. It just seems to be a problem when the accelerator is pushed down too fast. Thanks for the help, Mike
|
 |
| Bookmarks |
|
|
Hybrid Mode
