Misfire, stuttering, pops and bangs?

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BALDYMONSTER
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Re: Misfire, stuttering, pops and bangs?

Post by BALDYMONSTER »

It’s a rev 2 with a rev 3 turbo conversion.


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Voivod

Re: Misfire, stuttering, pops and bangs?

Post by Voivod »

Rev2 turbo or non turbo ? Could be ECU capacitors leaking like someone have mentioned,lambda sensor,injectors,coolant temperature sensor or wiring fault. Did you check the fuel pressure while driving?
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Re: Misfire, stuttering, pops and bangs?

Post by BALDYMONSTER »

Fuel pressure wasn’t checked while driving no.

It still feels like a fuelling issue to me actually.
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Voivod

Re: Misfire, stuttering, pops and bangs?

Post by Voivod »

BALDYMONSTER wrote: 21/02/21 0:16 Fuel pressure wasn’t checked while driving no.

It still feels like a fuelling issue to me actually.
Here is picture of faults and what may causing it. I would try to find someone local with same car and swap a few parts over before spending lots of money.
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Re: Misfire, stuttering, pops and bangs?

Post by BALDYMONSTER »

Thanks mate.
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Re: Misfire, stuttering, pops and bangs?

Post by Voivod »

BALDYMONSTER wrote: 21/02/21 11:03 Thanks mate.
No problem at all :th:
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Re: Misfire, stuttering, pops and bangs?

Post by jimi »

You can download a PDF copy of the BGB (Big Green Book aka the Toyota SW20 Repair Manual) which contains the troubleshooting guide pictured above from here https://www.mr2oc.co.uk/download-cats/d ... anual.html Various other PDF's of Toyota manuals, electrical diagrams etc for other models of MR2 are also available https://www.mr2oc.co.uk/download-cats/c ... stuff.html
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Re: Misfire, stuttering, pops and bangs?

Post by BALDYMONSTER »

jimi wrote: 21/02/21 16:16 You can download a PDF copy of the BGB (Big Green Book aka the Toyota SW20 Repair Manual) which contains the troubleshooting guide pictured above from here https://www.mr2oc.co.uk/download-cats/d ... anual.html Various other PDF's of Toyota manuals, electrical diagrams etc for other models of MR2 are also available https://www.mr2oc.co.uk/download-cats/c ... stuff.html

Awesome mate.

Many thanks.
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Re: Misfire, stuttering, pops and bangs?

Post by BALDYMONSTER »

Looks like the cause of the problem is the timing belt.

Got a belt, tensioner and water pump fitted a couple of months ago but it’s not been done correctly.

Certainly not lined up properly as the dizzy has been majorly advanced to get it to run, next to no tension on it and I reckon it jumped a few teeth when I accelerated hard joining the motorway a few weeks ago.

Whole lot is getting done again, properly this time.
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Voivod

Re: Misfire, stuttering, pops and bangs?

Post by Voivod »

BALDYMONSTER wrote: 25/02/21 13:52 Looks like the cause of the problem is the timing belt.

Got a belt, tensioner and water pump fitted a couple of months ago but it’s not been done correctly.

Certainly not lined up properly as the dizzy has been majorly advanced to get it to run, next to no tension on it and I reckon it jumped a few teeth when I accelerated hard joining the motorway a few weeks ago.

Whole lot is getting done again, properly this time.
I've found that the best and most accurate way to set the timing and do the timing belt,is to remove rocker cover and set each camshaft cut outs aligned with camshafts carrier caps cuts out or marks.
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Re: Misfire, stuttering, pops and bangs?

Post by BALDYMONSTER »

New timing belt and full kit fitted.

Problems solved.

New coil and igniter fitted also, just thought I might as well after plugs leads dizzy cap and rotor arm.

Runs perfectly and pulls like a train.

Full underseal and corrosion treatment/prevention getting done today. Oil and filter, sourcing and fixing water leak that’s gathering in drivers footwell and both front callipers fitted with refurb kits again after this winter.

Car back tomorrow hopefully.
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