Is it the fule pump?, Spluttering and stalling! |
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Is it the fule pump?, Spluttering and stalling! |
chrispovoas |
Apr 8 2023, 04:00 AM
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#1
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Member Group: Members Posts: 61 Joined: 8-April 23 From: New Zealand Member No.: 27,285 Region Association: Australia and New Zealand |
Hi guys, Chris from New Zealand here....finally bought myself a 914! Shes a '73 2.0 with original FI. Had her about a week, after standing for 8 years.
Previous owner spent some time and money getting her on the road as part of the sale to me, but still a bit of work to be done! I'll try and attach a picture. Took her for a shakedown run today for about 3 hours but then she started coughing and spluttering then stalled at about 60mph. Coasted to a halt, ignition on/off and away she went again for about half an hour.. Same thing again, ignition on/off and all was well for another 20 min.. This went on and on and the intervals between spluttering and stalling got more frequent until i just about made it home. Felt like fuel rather than electrical... Could it be the fuel pump, or any other ideas? I have a feeling I'll be using the forum quite a bit (IMG:style_emoticons/default/smile.gif) Nice to meet everyone! |
emerygt350 |
Apr 8 2023, 07:07 AM
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#2
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Advanced Member Group: Members Posts: 2,136 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
the attachment point on the rail for the fuel pressure guage makes Rfinegans suggestion real easy.
The rough start suggests to me your aux air valve may be misbehaving. Since it starts fine after it is warm it could be that or the FI cht sensor. If you crack the throttle on a cold start does it idle fine at 1400ish rpm? If so, likely to be the aux air valve. If it still kinda runs like crap I would check the cht sensor (it enrichens the mix when cold). I think you are going to have to go for another long drive and see if it does the same thing. Maybe run some injector cleaner through it while you are at it. And before you do anything else, check those plugs to see if it is running lean. If you have low fuel pressure or a pile of other issues, you want to make sure you aren't melting your engine. |
chrispovoas |
Apr 8 2023, 09:57 PM
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#3
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Member Group: Members Posts: 61 Joined: 8-April 23 From: New Zealand Member No.: 27,285 Region Association: Australia and New Zealand |
the attachment point on the rail for the fuel pressure guage makes Rfinegans suggestion real easy. The rough start suggests to me your aux air valve may be misbehaving. Since it starts fine after it is warm it could be that or the FI cht sensor. If you crack the throttle on a cold start does it idle fine at 1400ish rpm? If so, likely to be the aux air valve. If it still kinda runs like crap I would check the cht sensor (it enrichens the mix when cold). I think you are going to have to go for another long drive and see if it does the same thing. Maybe run some injector cleaner through it while you are at it. And before you do anything else, check those plugs to see if it is running lean. If you have low fuel pressure or a pile of other issues, you want to make sure you aren't melting your engine. Yes, starts first time after the initial morning start and does seem to idle very high at around 1400rpm. Some great thoughts there.. Is there a way to actually check the aux air valve / cht sensor? I think ill check all connections, plugs, distributor first to see if anything obvious. Anywhere you go to get your spare parts other than Auto Atlanta? |
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