SL/R129: Trouble starting and buzzing noise
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Newbie
Joined: Mar 2007
Posts: 1
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From: Calgary, Canada
1990 SL500
Trouble starting and buzzing noise
Hi everyone, I just picked up a 1990 SL500 imported from Japan (complete with not-so authentic SL 60 logo on back) and have run into a problem. Car has trouble starting. Turns over no problem at all, but it seems there is a lack of gas/petrol going through. Once it starts, no problems after that (so far). I do hear a buzzing sound coming from the right rear of the car by the gas cap but only when the car is in drive (like clock work, it pulses every few seconds). I did search a number of posts and it sounds like the fuel pump may be having issues (Red Mongoose). This seems strange as I had my fuel pump replaced as soon as I got the car (2 months ago). Could it be a bad install on the replacement fuel pump?
Last edited by reptile; Mar 12, 2007 at 02:11 PM.
Member
Joined: Jul 2005
Posts: 88
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From: Toronto
1998 E320, 1994 320 SL,2000 Ford F 150.1997 Gixxer 1100
Hi everyone, I just picked up a 1990 SL500 imported from Japan (complete with not-so authentic SL 60 logo on back) and have run into a problem. Car has trouble starting. Turns over no problem at all, but it seems there is a lack of gas/petrol going through. Once it starts, no problems after that (so far). I do hear a buzzing sound coming from the right rear of the car by the gas cap but only when the car is in drive (like clock work, it pulses every few seconds). I did search a number of posts and it sounds like the fuel pump may be having issues (Red Mongoose). This seems strange as I had my fuel pump replaced as soon as I got the car (2 months ago). Could it be a bad install on the replacement fuel pump?
Aahha, nope it's not your fuel pump. It is your vac pump. There is a leak somewhere and that's what causing it to buzz. I have the same prob. My driver door mirror leaks vac and causes the pump to keep replenishing the leaky lines.
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Joined: Jun 2012
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c240
Hi did you ever find out why it is hard to start i have the same problem when mine sits over night have to crank it and crank it runs ruff when it first starts but levels out runs fine after a few seconds i have tried putting gas in the intake one ounce car started right up so still looking to see where problem is any help would be great thanks
1990 SL500
1990 SL500
