More 1.7 D-Jet issues, Please help before I remove it!! |
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More 1.7 D-Jet issues, Please help before I remove it!! |
BK911 |
Dec 7 2007, 07:18 AM
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#1
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Senior Member Group: Members Posts: 672 Joined: 19-February 04 From: Rocky Top, TN Member No.: 1,674 Region Association: None |
One reason I bought this car was because it still had the fuel injection. But now I am getting so frustrated trying to get it to run well, I am considering swapping the FI for carbs. Please help before I switch to carbs!
She runs well cold and hot, but not in-between. She will stall and is very difficult to restart. In fact, I have pushed her out of traffic on several occasions after she stalled at a red light. I wait a couple of minutes and she fires right back up. I have a gunson and have set the CO to 2.5 at idle and 2500 rpm. And again, she runs well once hot. The AAR works. I swapped out the CHT even though the old one tested fine. I am thinking it’s the cold start valve. I disconnected the wire to the CSV last night and reset the CO to 2.5. I went for a ride, came home and shut off the car. Let the gunson calibrate then rechecked the CO. Very lean and wouldn’t run worth a crap. I am thinking I have a leaky CSV. It was leaking when I set the CO and stopped leaking when the car heated up? Can I remove it? How do you plug it? If I just remove the gas lines to it, will it leak air? Is 2.5 a good number for the CO at idle and 2500 rpm? I’d appreciate any help. Please help me keep this car original!! |
BK911 |
Dec 8 2007, 04:56 PM
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#2
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Senior Member Group: Members Posts: 672 Joined: 19-February 04 From: Rocky Top, TN Member No.: 1,674 Region Association: None |
I bypassed the CSV and plugged the connections. No difference. I pulled and bench tested the MPS. The vacuum dropped from 20mm to 12mm in about 5 minutes. This has been consistant since I have had the car, so I am leaning towards something else. I just don't know what! I tested the resistance across the terminals of the MPS and they were pretty close to what is listed in Mr. Anders references.
After I bypassed the CSV, I set the CO to 2.5 at idle and 2500 rpm. Took it out for a spin and it drove like crap. I remeasured the CO and it was very lean, like around 0. I have no idea what to check next. It seems I can't hold a consistant mixture. Is 2.5 the magic number? I'm not giving up yet, but I am close. Back to the garage. |
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