4runner 4cyl backfire problem

Sorry it is a 1997 4runner. The dealer said that the 3rvz engines have
soft valve seats and need a valve job around 130,000 miles. The
problem occurs when primarilly when I accelerate from when I am
stopped at signal etc...


On Feb 10, 9:18 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
> wrote in message


>
>
> > When I accelerate under under light load I am getting a occasional
> > backfire. I have checked the EGR and spark plug wires and it is fine.
> > Before I was getting a random missfire in cylinder #2. I have had a
> > chance to run a compression test. But I assume that the valves can be
> > adjusted to compensate...
>
> What model year is the 4Runner? Which engine? Carbureted or EFI?
> --
>
> Ray O
> (correct punctuation to reply)
 >> Stay informed about: 4runner 4cyl backfire problem 

EFI

On Feb 11, 3:05 am, " "
wrote:
> Sorry it is a 1997 4runner. The dealer said that the 3rvz engines have
> soft valve seats and need a valve job around 130,000 miles. The
> problem occurs when primarilly when I accelerate from when I am
> stopped at signal etc...
>
> On Feb 10, 9:18 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
>
> > wrote in message
> >
>
> > > When I accelerate under under light load I am getting a occasional
> > > backfire. I have checked the EGR and spark plug wires and it is fine.
> > > Before I was getting a random missfire in cylinder #2. I have had a
> > > chance to run a compression test. But I assume that the valves can be
> > > adjusted to compensate...
>
> > What model year is the 4Runner? Which engine? Carbureted or EFI?
> > --
>
> > Ray O
> > (correct punctuation to reply)
 >> Stay informed about: 4runner 4cyl backfire problem 

wrote in message

> Sorry it is a 1997 4runner. The dealer said that the 3rvz engines have
> soft valve seats and need a valve job around 130,000 miles. The
> problem occurs when primarilly when I accelerate from when I am
> stopped at signal etc...
>
>

Several things can make an engine backfire, and bad valves is one of them.
I think your dealer's diagnosis is probably correct.
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: 4runner 4cyl backfire problem