hesitates/jerking at low speeds

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capri28
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hesitates/jerking at low speeds

Post by capri28 » Fri Apr 05, 2019 1:59 pm

My 2.8 seems to hesitate/jerking at low speeds, especially around 30mph & gets worse as she warms up.

It started doing this after I replaced the Plugs, Leads, Cap & Rotor arm.

I'm not sure what's causing it, hoping you guys could help me out?

Cheers

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Jasonmarie
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Re: hesitates/jerking at low speeds

Post by Jasonmarie » Fri Apr 05, 2019 2:04 pm

If you have kept the old stuff replace bit by bit as even new parts have faults . I would go with the leads first . Hope that helps
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Re: hesitates/jerking at low speeds

Post by D366Y » Fri Apr 05, 2019 2:08 pm

Sounds like the timing is ever so slightly out - my first point of call would be to check the points gap and that the timing gear is set correctly
I had mine set to 6 degrees and it was OK, changed to 8 and made a world of difference!

capri28
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Re: hesitates/jerking at low speeds

Post by capri28 » Fri Apr 05, 2019 2:42 pm

Jasonmarie wrote:If you have kept the old stuff replace bit by bit as even new parts have faults . I would go with the leads first . Hope that helps
I've already done that, to the point of putting all the old stuff back on ! no difference

Thanks anyway

capri28
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Re: hesitates/jerking at low speeds

Post by capri28 » Fri Apr 05, 2019 2:42 pm

D366Y wrote:Sounds like the timing is ever so slightly out - my first point of call would be to check the points gap and that the timing gear is set correctly
I had mine set to 6 degrees and it was OK, changed to 8 and made a world of difference!
I had the timing & fuel pressure checked last week, all, is ok...

Thanks anyway

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Re: hesitates/jerking at low speeds

Post by Andrew 2.8i » Fri Apr 05, 2019 2:46 pm

I'm with Jason on this. If the car was running perfectly well before, the chances are that there is an issue with something you've replaced.
The first things I would check is that you have put the leads back in the correct order and gapped the plugs correctly.

Andrew.
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Re: hesitates/jerking at low speeds

Post by D366Y » Fri Apr 05, 2019 4:26 pm

Andrew 2.8i wrote:I'm with Jason on this. If the car was running perfectly well before, the chances are that there is an issue with something you've replaced.
The first things I would check is that you have put the leads back in the correct order and gapped the plugs correctly.

Andrew.
If everything else has gone back on then it has to be points gap or sparks gap... I think :lol:

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Re: hesitates/jerking at low speeds

Post by Peter-S » Fri Apr 05, 2019 5:24 pm

D366Y wrote: If everything else has gone back on then it has to be points gap or sparks gap... I think :lol:
No points on a standard 2.8!
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Re: hesitates/jerking at low speeds

Post by Peter-S » Fri Apr 05, 2019 5:25 pm

capri28 wrote:
D366Y wrote:Sounds like the timing is ever so slightly out - my first point of call would be to check the points gap and that the timing gear is set correctly
I had mine set to 6 degrees and it was OK, changed to 8 and made a world of difference!
I had the timing & fuel pressure checked last week, all, is ok...

Thanks anyway
Have you had emissions checked? Too rich or too lean can cause those sort of symptoms
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Re: hesitates/jerking at low speeds

Post by Jasonmarie » Fri Apr 05, 2019 5:38 pm

Could be coil ? If you have replaced all the old stuff and she’s still doing it you might have knock the timing out as peter has said .
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Re: hesitates/jerking at low speeds

Post by capri28 » Sun Apr 07, 2019 11:21 am

Jasonmarie wrote:Could be coil ? If you have replaced all the old stuff and she’s still doing it you might have knock the timing out as peter has said .
Yes is was a faulty coil causing the jerking,
With a New coil she’s now running spot on.

Thanks for all the help.

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Re: hesitates/jerking at low speeds

Post by Jasonmarie » Sun Apr 07, 2019 12:02 pm

Yes i am glad it’s sorted I had the same issue on my pinto engine and it turned out to be the coil . :beer:
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Re: hesitates/jerking at low speeds

Post by D366Y » Mon Apr 08, 2019 7:47 am

Peter-S wrote:
D366Y wrote: If everything else has gone back on then it has to be points gap or sparks gap... I think :lol:
No points on a standard 2.8!
Shows me what I know... I'll stick to pintos :lol:

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Re: hesitates/jerking at low speeds

Post by Peter-S » Tue Apr 09, 2019 5:15 pm

D366Y wrote:
Peter-S wrote:
D366Y wrote: If everything else has gone back on then it has to be points gap or sparks gap... I think :lol:
No points on a standard 2.8!
Shows me what I know... I'll stick to pintos :lol:
or maybe a 3.0 Essex :goodluck:
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