Hesitant to start. Intermittently.
Hello all you great forum members! Nothing too crazy but I wanted to know if anyone has had any experience with this or not. Aka should I look further into it or just leave it.
Every once in a while probably once ever 50 starts my truck doesnt want to start right up like it usually does it will just turn over. Obviously it's not a starter issue, I'm thinking it's something fuel related, however I must say, the first time I ever encountered this was shortly after installing my cold air intake, has anyone else encountered this? Even on cold starts in 20 degree weather my truck turns over for a half second and fires right up so I thought this to be odd. Thanks all! |
It could be a sticky IAC valve.
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I just had problem with my Cat Converters and it would present like this. It fooled me for a while until I put a simple Vac gauge on it to see that Vac was low at idle. This maybe not be your problem but don't count it out.
:hunter: |
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If you are talking about blocked up catalytic converters, why would that cause an intermittent hard start. I would think it would be more of a constant issue if the cats were in bad shape. |
It could also be related to fuel pressure at start up. I cleaned the maf replaced the fuel filter , checked and cleaned the battery terminals etc but the symptoms remained. Ended up being the oe fuel pump, which finally gave up after a year or so but lasted about 300k so it was due.
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I'd like to see how somebody measures the intake vacuum pressure. |
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I’d do the IAC first Sent from my iPhone using Tapatalk |
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Hesitant to start. Intermittently.
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I’m going to say this...... As part of our collective and sharing knowledge, shotgunning the problem by replacing a bunch of things at the same time may fix it but not define what was the actual problem from a troubleshooting perspective. You can still replace all the things you want but do it one part at a time to figure out what’s causing the problem. There are a bunch of extended crank threads without any solution. My Ex’s 97 Puppy Hauler would start normal in about 2 seconds on the starter. Then on occasion it would take longer. 5 or so. It’s not my problem anymore. If it was my problem I’d do the IAC first since at times I caught it idling high. And cleaning it would fix it. Second I’d watch fuel rail pressure to see if a injector was leaking and bleeding off rail pressure. Third would be fuel filter (in my case it’s only two years old) Fourth would be fuel pump. I do not think our fuel pump starts running until it’s put to start. American rigs will run the fuel pump at ignition on for a few seconds and after it detects engine run it will keep it running. Sent from my iPhone using Tapatalk |
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