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Join Date: Dec 2004
Location: UK
Posts: 371
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Blocked injectors
Do 944 injectors need cleaning on a regular basis?
Ran some injector cleaner through mine last summer and i'm going to do the same again now as i suspect they may be blocked (every now and then i can smell fuel and she will run a little irratic at about 2500rpm in 3rd or 4th in town driving (not noticable at speed or open road). Does anyone clean them on a regular basis and would faulty injectors be noticable only at idle or throughout the driving range?
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1989 guardsred 944s2 cabriolet, 1983 metallic claret 924 lux (sold) |
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03-24-2006, 04:25 AM
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Location: Kingsport, TN
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If your injectors are that old I'd think about sending them off and have them professionally cleaned. I did that with mine several years ago. It made a difference for me. Caveat: Your mileage may vary.
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Lawrence 1986 951 2002 SLK32 AMG 1987 328GTS 2011 528i |
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03-24-2006, 04:41 AM
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Hi lawrence, what were you symptoms?
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1989 guardsred 944s2 cabriolet, 1983 metallic claret 924 lux (sold) |
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03-24-2006, 05:08 AM
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Slight uneveness during light acceleration even after new rotor, plugs, wires, distributor cap. Plus, the car had about 140K on it at that time, and I assumed PO did not do it. I had put about 50K on it myself by that time.
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Lawrence 1986 951 2002 SLK32 AMG 1987 328GTS 2011 528i |
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03-24-2006, 09:19 AM
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Location: Ontario, Canada
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i run a couple bottles of injector cleaner a year...
failing that, i'll fill up with the high-test gas with the injector cleaner addative maybe once or twice. what octane of gas are you using in your car?
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Kyle 2008 Mini Cooper // '83 Porsche 944 // '01 Mazda Protege [sold] // "Never break more than you fix!" - SoCal Driver |
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03-24-2006, 09:29 AM
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98 ron mostly.
Wonder if any condensation from the petrol tank in cold weather would work through to the injectors.
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1989 guardsred 944s2 cabriolet, 1983 metallic claret 924 lux (sold) Last edited by 944cabby; 03-24-2006 at 10:10 AM.. |
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03-24-2006, 10:08 AM
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Location: Ontario, Canada
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that's the problem right there.
the guys will correct me if I'm wrong, but constantly running a higher octane will actually create carbon deposits... I believe 98ron is about 91-94 over here in north america... and that's too high. i'm sure the guys will chime in if I'm wrong..
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Kyle 2008 Mini Cooper // '83 Porsche 944 // '01 Mazda Protege [sold] // "Never break more than you fix!" - SoCal Driver |
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03-24-2006, 10:14 AM
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Cheers Eldorado,
carbon deposits on the plugs or on the pistons?I am due a plug change actually. Regular unleaded fuel over here is 95.
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1989 guardsred 944s2 cabriolet, 1983 metallic claret 924 lux (sold) |
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03-24-2006, 10:22 AM
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