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VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Wed Sep 06, 2017 7:46 pm
by almweideman
Hi guys
Have noticed over the past few days that my car isn't starting on the first try. When I turn the key I can hear the pump prime as soon as it's done I turn to start but nothing engine turns no catch.
Turn the key off and on and turn to start and starts no problem every time on the second try. Happens in the mornings and when I'm done with work.
Battery, plugs and all the rest was check and all good. Changed the coolant sensor still the same. Any ideas maybe? Always use to start on the first turn. Bothers me that's now the second turn that it starts. I should mention once the car starts no problem after that. Only if it's left for a while over night etc. Have read that could be loosing pressure while standing. Any guidance in what I can check. Oh also have scanned the car. Clean of errors.
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Wed Sep 06, 2017 8:06 pm
by panic-mechanic
check that it sees rpmwhen you crank it.
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Wed Sep 06, 2017 8:08 pm
by Howie-WP
My brother had hard start issue on his XPolo 1.9TDi, turned out to be the starter on the way out. Very similar (exactly) symptoms to what you state. Mileage on car?
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Wed Sep 06, 2017 8:11 pm
by almweideman
Starter is 100% motor turns normally no issues when I turn the key the first time.
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Wed Sep 06, 2017 8:11 pm
by almweideman
panic-mechanic wrote:check that it sees rpmwhen you crank it.
Rev counter does move when I crank
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Wed Sep 06, 2017 8:13 pm
by almweideman
Howie-WP wrote:My brother had hard start issue on his XPolo 1.9TDi, turned out to be the starter on the way out. Very similar (exactly) symptoms to what you state. Mileage on car?
Starter turns perfectly on first crank in the moring just no start. Second crack starts perfectly. Mileage 267000
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Thu Sep 07, 2017 7:49 am
by panic-mechanic
Well in that case pump, pump,relay, so pit a fuel,pressure gauge on and see if thmpressure come up. Next check for spark.
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Thu Sep 07, 2017 8:34 pm
by Ashveer03
Seems like a fuel pressure issue
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Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Fri Sep 08, 2017 8:13 am
by almweideman
Ashveer03 wrote:Seems like a fuel pressure issue
Sent from my SM-G531H using Tapatalk
Going to change the fuel filter later as it has the fuel regulator built into it. Might do the trick.
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Fri Sep 08, 2017 11:15 am
by panic-mechanic
Yup randomly change some stuff. It is always better than proper diagnosis
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Fri Sep 08, 2017 4:12 pm
by VAG Fan
If it's a fuel pressure issue, and the pump primes normally upon switching the ignition on, then I would try to cycle the ignition a few times, i.e. prime the pump a few times. This should build up sufficient pressure for a successful first-time start. If repeated ignition cycling helps, then you know that the fuel pressure is lost while the car stands. If repeated cycling does not help, then it's probably not a fuel pressure issue.
That being said, I agree with Stephan. Before you change anything, do a proper diagnosis.
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Mon Sep 11, 2017 6:52 am
by almweideman
VAG Fan wrote:If it's a fuel pressure issue, and the pump primes normally upon switching the ignition on, then I would try to cycle the ignition a few times, i.e. prime the pump a few times. This should build up sufficient pressure for a successful first-time start. If repeated ignition cycling helps, then you know that the fuel pressure is lost while the car stands. If repeated cycling does not help, then it's probably not a fuel pressure issue.
That being said, I agree with Stephan. Before you change anything, do a proper diagnosis.
Thanks guys. Ok did as suggested. primed the pumped about 6 times this morning. Still no start on first crank. Second time as always.I dont get it. the car drives perfect. No stalling,no jerking,no loss of power,not using extra fuel no error codes.Car starts every time no problem after my first start in the morning.Same issue happens when i leave for work,thats only if i dont leave office during the day.Car stands from about 6:30 to 17:00 if im at office all day.Any suggestions?
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Mon Sep 11, 2017 7:13 am
by panic-mechanic
Yes i already gave you suggestions. What you are actually asking is a solution where you don't have to do anything.
You have to do some fault finding. Ie check for pressure and check for spark.
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Mon Sep 11, 2017 8:00 am
by almweideman
panic-mechanic wrote:Yes i already gave you suggestions. What you are actually asking is a solution where you don't have to do anything.
You have to do some fault finding. Ie check for pressure and check for spark.
Will have go buy a pressure gauge quick this morning.In regards to spark. Is it possible that the coil pack can give no spark on the first crank but spark on the second crank?
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Mon Sep 11, 2017 8:34 am
by panic-mechanic
Yes and no. But if you have no spark it can lead you to something else. Like the immobiliser. But if you don't know you can't even elliminate one of the possibilities. Fault finding is as much about finding out what it is not as that can lead to what it is....
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Thu Mar 05, 2020 11:06 am
by Stephan Ham
I have exactly the same problem . 1.4 Petrol 9N Polo . Mine is so bad you have to crank it for 2 mins , before it would start . Thereafter it's fine for the whole day . Next morning , same trouble
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Fri Mar 06, 2020 9:41 am
by VAG Fan
If you haven't done so already, I would start by replacing the engine coolant temperature sensor. If the engine doesn't get a cold-start enrichment in the morning, it would do exactly what you've described. For the rest of the day, there is enough warmth to start the engine without enrichment.
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Fri Mar 06, 2020 9:51 pm
by spdgti
Intermittent Crank Position Sensor?
Re: VW POLO 9N3 1.6 BAH not starting in first try.
Posted: Mon Nov 16, 2020 5:19 pm
by Nathan Naidoo
almweideman wrote: ↑Wed Sep 06, 2017 7:46 pm
Hi guys
Have noticed over the past few days that my car isn't starting on the first try. When I turn the key I can hear the pump prime as soon as it's done I turn to start but nothing engine turns no catch.
Turn the key off and on and turn to start and starts no problem every time on the second try. Happens in the mornings and when I'm done with work.
Battery, plugs and all the rest was check and all good. Changed the coolant sensor still the same. Any ideas maybe? Always use to start on the first turn. Bothers me that's now the second turn that it starts. I should mention once the car starts no problem after that. Only if it's left for a while over night etc. Have read that could be loosing pressure while standing. Any guidance in what I can check. Oh also have scanned the car. Clean of errors.
Hi
Have you managed to resolve this issue