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#1
03-05-2004, 01:06 PM
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300E -- hard start
My '86 300E with 170k is taking much longer to start in the morning. It cranks about 3 to 4 seconds before catching then runs fine. On subsequent starts during the day it fires right up. Only about 10k since last tune, at which time injectors were replaced. I've been running 91 to 92 octane gas. Any ideas about the problem?
FWIW, I just spent several thou more than the car is worth to do some old-age related mechanical repairs. (Drive shaft rebuild, rear muffler, rear suspension carrier, yada, yada, yada.) It nows looks and runs great. I'm very happy I chose not to dump it. My only concern now is to stay out of any accident that would cause more than a couple thou worth of damage.  Insurance companies aren't interested in my repair bills.
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62 220sb 67 250S 72 280SE 4.5 74 280C 77 300D 82 240D 85 190E 2.3 86 300E RIP 12/28/09 85 300SD 92 300D 2.5 00 E320 Current Over 1,000,000 miles in Benzes, Since66 ....and a whole passel of BMW 2002 and Tii 
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#2
03-06-2004, 12:12 AM
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Hard Start
Sounds like you may have a problem with fuel loss from one of the following
1) Fuel distributor leaking fuel down into the intake causing un metered fuel to be dumped into the engine causing a hard start. 2) Fuel pump check valve at the fuel pump leaking pressure back to fuel tank. 3) Fuel pressure accumulator not holding pressure. 4) EHA not enriching the fuel mixture like it should at first crank. 5) Coolant temp sensor may be bad. 6) Low compression in the engine. Hope this helps
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DRIVE HARD-DRIVE FAST-DRIVE TO GET THE HELL OUT OF MY WAY. 1986 190E 2.3-16 Pearl Black!! 1987 190E 2.3-16 Smoke Silver!! 1986 190E 2.5-16 Pearl Black!! 2004 CLK 500 Cabrio Designo package!! 1994 E320 Cabrio Red with black top!! 1985 500 SEL Anthracite Grey !! 2011 Subaru Impreza STI 380HP (Yeah Baby)
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#3
03-06-2004, 10:17 AM
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Thanks, Benz Tek.
#1 thru #5 are much more palatable than #6. Appreciate the help.
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62 220sb 67 250S 72 280SE 4.5 74 280C 77 300D 82 240D 85 190E 2.3 86 300E RIP 12/28/09 85 300SD 92 300D 2.5 00 E320 Current Over 1,000,000 miles in Benzes, Since66 ....and a whole passel of BMW 2002 and Tii
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#4
03-06-2004, 10:55 AM
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2, 3 and 4 are more like it. But 4 should be the cold start valve, not the EHA.
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1999 Porsche 996 Carrera Convertible 1994 420E - SOLD 1986 300E - SOLD, what a car 609 Certified
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#5
03-07-2004, 12:11 AM
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Sorry I didn't put them in order..lol Just typing to get all of the ones I could think of off hand. The reason I stated the EHA is because at cold starts the EHA's milli amps have to rise or enrich by changing the pressure between the lower and upper chambers of the fuel ditributor. I have had great luck by just removing the EHA and giving the adjustment screw a 6th of a turn clockwise(enriching the mixture). After the car is started you may also want to check your amps going thru the EHA(+&-) and also check the duty cycle at pin 3 in the round diagnostic plug to make sure that you have nice oscilation around 50 percent at normal engine temp.
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DRIVE HARD-DRIVE FAST-DRIVE TO GET THE HELL OUT OF MY WAY. 1986 190E 2.3-16 Pearl Black!! 1987 190E 2.3-16 Smoke Silver!! 1986 190E 2.5-16 Pearl Black!! 2004 CLK 500 Cabrio Designo package!! 1994 E320 Cabrio Red with black top!! 1985 500 SEL Anthracite Grey !! 2011 Subaru Impreza STI 380HP (Yeah Baby)
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