Got MPI. Now can't loose PING
 

Well, now that I have MPI on my CJ7 I now have PING I can't get rid of. I'm
running 91 octane (highest in California). JeepsRUs pulled the timing back
6 degrees. I put cooler spark plugs in at Hesco's recommendation. After
all that I still have the ping.

From here I know of a couple of routes to go which actually can blend
together.

First, an adjustable fuel pressure regulator which both Hesco and JeepsRUs
said might be necessary. The downside is price. Hesco charges 180
something for this piece. Here I don't know if this will definitely clear
up the ping.

The other route is the 4.0L head. I'm told that will definitely clear up
any ping. Since I already have a 4.0L head sitting in my back yard all
ready to go I was thinking of just going to that. I only need to get a 4.0L
manifold to make it work. The downside of that is the amount of work I need
to do. Basically tear the whole thing apart again to put the head and
manifold on.


Anyone else run into this problem and found a work around?

Any other suggestions?

Oh, one other thing I noticed. After I put new plugs in I took a look at
them to see their condition. It seems (and I've noticed this with the carb
and two sets of plugs in the MPI) that a carbon trace forms down one side
(about 10% of the radius of the white part) of the plug on all plugs. Is
this normal or is this fouling and if it is fouling what could be causing
it? Could it be the 4.2L head might cause this? Valves? What?

Thanks in advance,

Bill

Re: Got MPI. Now can't loose PING
 

It sure sounds like it's running way too lean. Is there anything miswired
or anything else that could cause it to run too lean?

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"William Oliveri" <wuji@bigvalley.net> wrote in message
news:blo8bh$e40ij$1@ID-193866.news.uni-berlin.de...
> Well, now that I have MPI on my CJ7 I now have PING I can't get rid of.
I'm
> running 91 octane (highest in California). JeepsRUs pulled the timing
back
> 6 degrees. I put cooler spark plugs in at Hesco's recommendation. After
> all that I still have the ping.
>
> From here I know of a couple of routes to go which actually can blend
> together.
>
> First, an adjustable fuel pressure regulator which both Hesco and JeepsRUs
> said might be necessary. The downside is price. Hesco charges 180
> something for this piece. Here I don't know if this will definitely clear
> up the ping.
>
> The other route is the 4.0L head. I'm told that will definitely clear up
> any ping. Since I already have a 4.0L head sitting in my back yard all
> ready to go I was thinking of just going to that. I only need to get a
4.0L
> manifold to make it work. The downside of that is the amount of work I
need
> to do. Basically tear the whole thing apart again to put the head and
> manifold on.
>
>
> Anyone else run into this problem and found a work around?
>
> Any other suggestions?
>
> Oh, one other thing I noticed. After I put new plugs in I took a look at
> them to see their condition. It seems (and I've noticed this with the
carb
> and two sets of plugs in the MPI) that a carbon trace forms down one side
> (about 10% of the radius of the white part) of the plug on all plugs. Is
> this normal or is this fouling and if it is fouling what could be causing
> it? Could it be the 4.2L head might cause this? Valves? What?
>
> Thanks in advance,
>
> Bill
>
>
>
>
>
>
>

Re: Got MPI. Now can't loose PING
 

It sure sounds like it's running way too lean. Is there anything miswired
or anything else that could cause it to run too lean?

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"William Oliveri" <wuji@bigvalley.net> wrote in message
news:blo8bh$e40ij$1@ID-193866.news.uni-berlin.de...
> Well, now that I have MPI on my CJ7 I now have PING I can't get rid of.
I'm
> running 91 octane (highest in California). JeepsRUs pulled the timing
back
> 6 degrees. I put cooler spark plugs in at Hesco's recommendation. After
> all that I still have the ping.
>
> From here I know of a couple of routes to go which actually can blend
> together.
>
> First, an adjustable fuel pressure regulator which both Hesco and JeepsRUs
> said might be necessary. The downside is price. Hesco charges 180
> something for this piece. Here I don't know if this will definitely clear
> up the ping.
>
> The other route is the 4.0L head. I'm told that will definitely clear up
> any ping. Since I already have a 4.0L head sitting in my back yard all
> ready to go I was thinking of just going to that. I only need to get a
4.0L
> manifold to make it work. The downside of that is the amount of work I
need
> to do. Basically tear the whole thing apart again to put the head and
> manifold on.
>
>
> Anyone else run into this problem and found a work around?
>
> Any other suggestions?
>
> Oh, one other thing I noticed. After I put new plugs in I took a look at
> them to see their condition. It seems (and I've noticed this with the
carb
> and two sets of plugs in the MPI) that a carbon trace forms down one side
> (about 10% of the radius of the white part) of the plug on all plugs. Is
> this normal or is this fouling and if it is fouling what could be causing
> it? Could it be the 4.2L head might cause this? Valves? What?
>
> Thanks in advance,
>
> Bill
>
>
>
>
>
>
>

Re: Got MPI. Now can't loose PING
 

It sure sounds like it's running way too lean. Is there anything miswired
or anything else that could cause it to run too lean?

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"William Oliveri" <wuji@bigvalley.net> wrote in message
news:blo8bh$e40ij$1@ID-193866.news.uni-berlin.de...
> Well, now that I have MPI on my CJ7 I now have PING I can't get rid of.
I'm
> running 91 octane (highest in California). JeepsRUs pulled the timing
back
> 6 degrees. I put cooler spark plugs in at Hesco's recommendation. After
> all that I still have the ping.
>
> From here I know of a couple of routes to go which actually can blend
> together.
>
> First, an adjustable fuel pressure regulator which both Hesco and JeepsRUs
> said might be necessary. The downside is price. Hesco charges 180
> something for this piece. Here I don't know if this will definitely clear
> up the ping.
>
> The other route is the 4.0L head. I'm told that will definitely clear up
> any ping. Since I already have a 4.0L head sitting in my back yard all
> ready to go I was thinking of just going to that. I only need to get a
4.0L
> manifold to make it work. The downside of that is the amount of work I
need
> to do. Basically tear the whole thing apart again to put the head and
> manifold on.
>
>
> Anyone else run into this problem and found a work around?
>
> Any other suggestions?
>
> Oh, one other thing I noticed. After I put new plugs in I took a look at
> them to see their condition. It seems (and I've noticed this with the
carb
> and two sets of plugs in the MPI) that a carbon trace forms down one side
> (about 10% of the radius of the white part) of the plug on all plugs. Is
> this normal or is this fouling and if it is fouling what could be causing
> it? Could it be the 4.2L head might cause this? Valves? What?
>
> Thanks in advance,
>
> Bill
>
>
>
>
>
>
>

Re: Got MPI. Now can't loose PING
 

Why do you think it's running lean? What gives you that indication?

If anything I thought it would be running rich, that I have some hole in my
exhaust manifold and the O2 sensor not compensating. Couldn't find one but
just a thought trying to figure this out.

Thanks,

bill

"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:BFNfb.43680$gv5.38540@fed1read05...
> It sure sounds like it's running way too lean. Is there anything miswired
> or anything else that could cause it to run too lean?
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
>
> "William Oliveri" <wuji@bigvalley.net> wrote in message
> news:blo8bh$e40ij$1@ID-193866.news.uni-berlin.de...
> > Well, now that I have MPI on my CJ7 I now have PING I can't get rid of.
> I'm
> > running 91 octane (highest in California). JeepsRUs pulled the timing
> back
> > 6 degrees. I put cooler spark plugs in at Hesco's recommendation.
After
> > all that I still have the ping.
> >
> > From here I know of a couple of routes to go which actually can blend
> > together.
> >
> > First, an adjustable fuel pressure regulator which both Hesco and
JeepsRUs
> > said might be necessary. The downside is price. Hesco charges 180
> > something for this piece. Here I don't know if this will definitely
clear
> > up the ping.
> >
> > The other route is the 4.0L head. I'm told that will definitely clear
up
> > any ping. Since I already have a 4.0L head sitting in my back yard all
> > ready to go I was thinking of just going to that. I only need to get a
> 4.0L
> > manifold to make it work. The downside of that is the amount of work I
> need
> > to do. Basically tear the whole thing apart again to put the head and
> > manifold on.
> >
> >
> > Anyone else run into this problem and found a work around?
> >
> > Any other suggestions?
> >
> > Oh, one other thing I noticed. After I put new plugs in I took a look
at
> > them to see their condition. It seems (and I've noticed this with the
> carb
> > and two sets of plugs in the MPI) that a carbon trace forms down one
side
> > (about 10% of the radius of the white part) of the plug on all plugs.
Is
> > this normal or is this fouling and if it is fouling what could be
causing
> > it? Could it be the 4.2L head might cause this? Valves? What?
> >
> > Thanks in advance,
> >
> > Bill
> >
> >
> >
> >
> >
> >
> >
>
>

Re: Got MPI. Now can't loose PING
 

Why do you think it's running lean? What gives you that indication?

If anything I thought it would be running rich, that I have some hole in my
exhaust manifold and the O2 sensor not compensating. Couldn't find one but
just a thought trying to figure this out.

Thanks,

bill

"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:BFNfb.43680$gv5.38540@fed1read05...
> It sure sounds like it's running way too lean. Is there anything miswired
> or anything else that could cause it to run too lean?
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
>
> "William Oliveri" <wuji@bigvalley.net> wrote in message
> news:blo8bh$e40ij$1@ID-193866.news.uni-berlin.de...
> > Well, now that I have MPI on my CJ7 I now have PING I can't get rid of.
> I'm
> > running 91 octane (highest in California). JeepsRUs pulled the timing
> back
> > 6 degrees. I put cooler spark plugs in at Hesco's recommendation.
After
> > all that I still have the ping.
> >
> > From here I know of a couple of routes to go which actually can blend
> > together.
> >
> > First, an adjustable fuel pressure regulator which both Hesco and
JeepsRUs
> > said might be necessary. The downside is price. Hesco charges 180
> > something for this piece. Here I don't know if this will definitely
clear
> > up the ping.
> >
> > The other route is the 4.0L head. I'm told that will definitely clear
up
> > any ping. Since I already have a 4.0L head sitting in my back yard all
> > ready to go I was thinking of just going to that. I only need to get a
> 4.0L
> > manifold to make it work. The downside of that is the amount of work I
> need
> > to do. Basically tear the whole thing apart again to put the head and
> > manifold on.
> >
> >
> > Anyone else run into this problem and found a work around?
> >
> > Any other suggestions?
> >
> > Oh, one other thing I noticed. After I put new plugs in I took a look
at
> > them to see their condition. It seems (and I've noticed this with the
> carb
> > and two sets of plugs in the MPI) that a carbon trace forms down one
side
> > (about 10% of the radius of the white part) of the plug on all plugs.
Is
> > this normal or is this fouling and if it is fouling what could be
causing
> > it? Could it be the 4.2L head might cause this? Valves? What?
> >
> > Thanks in advance,
> >
> > Bill
> >
> >
> >
> >
> >
> >
> >
>
>

Re: Got MPI. Now can't loose PING
 

Why do you think it's running lean? What gives you that indication?

If anything I thought it would be running rich, that I have some hole in my
exhaust manifold and the O2 sensor not compensating. Couldn't find one but
just a thought trying to figure this out.

Thanks,

bill

"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:BFNfb.43680$gv5.38540@fed1read05...
> It sure sounds like it's running way too lean. Is there anything miswired
> or anything else that could cause it to run too lean?
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
>
> "William Oliveri" <wuji@bigvalley.net> wrote in message
> news:blo8bh$e40ij$1@ID-193866.news.uni-berlin.de...
> > Well, now that I have MPI on my CJ7 I now have PING I can't get rid of.
> I'm
> > running 91 octane (highest in California). JeepsRUs pulled the timing
> back
> > 6 degrees. I put cooler spark plugs in at Hesco's recommendation.
After
> > all that I still have the ping.
> >
> > From here I know of a couple of routes to go which actually can blend
> > together.
> >
> > First, an adjustable fuel pressure regulator which both Hesco and
JeepsRUs
> > said might be necessary. The downside is price. Hesco charges 180
> > something for this piece. Here I don't know if this will definitely
clear
> > up the ping.
> >
> > The other route is the 4.0L head. I'm told that will definitely clear
up
> > any ping. Since I already have a 4.0L head sitting in my back yard all
> > ready to go I was thinking of just going to that. I only need to get a
> 4.0L
> > manifold to make it work. The downside of that is the amount of work I
> need
> > to do. Basically tear the whole thing apart again to put the head and
> > manifold on.
> >
> >
> > Anyone else run into this problem and found a work around?
> >
> > Any other suggestions?
> >
> > Oh, one other thing I noticed. After I put new plugs in I took a look
at
> > them to see their condition. It seems (and I've noticed this with the
> carb
> > and two sets of plugs in the MPI) that a carbon trace forms down one
side
> > (about 10% of the radius of the white part) of the plug on all plugs.
Is
> > this normal or is this fouling and if it is fouling what could be
causing
> > it? Could it be the 4.2L head might cause this? Valves? What?
> >
> > Thanks in advance,
> >
> > Bill
> >
> >
> >
> >
> >
> >
> >
>
>

Re: Got MPI. Now can't loose PING
 

An engine will just ping a lot easier if it's running too lean... and it can
also be bad for the engine because it runs hotter inside the combustion
chambers when it's running too lean. I'm really not much of an engine
mechanic but a too-lean condition can sure cause symptoms that sound like
yours.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"William Oliveri" <wuji@bigvalley.net> wrote in message
news:blo91i$ejvbl$1@ID-193866.news.uni-berlin.de...
> Why do you think it's running lean? What gives you that indication?
>
> If anything I thought it would be running rich, that I have some hole in
my
> exhaust manifold and the O2 sensor not compensating. Couldn't find one
but
> just a thought trying to figure this out.
>
> Thanks,
>
> bill
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:BFNfb.43680$gv5.38540@fed1read05...
> > It sure sounds like it's running way too lean. Is there anything
miswired
> > or anything else that could cause it to run too lean?
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/
> >
> > "William Oliveri" <wuji@bigvalley.net> wrote in message
> > news:blo8bh$e40ij$1@ID-193866.news.uni-berlin.de...
> > > Well, now that I have MPI on my CJ7 I now have PING I can't get rid
of.
> > I'm
> > > running 91 octane (highest in California). JeepsRUs pulled the timing
> > back
> > > 6 degrees. I put cooler spark plugs in at Hesco's recommendation.
> After
> > > all that I still have the ping.
> > >
> > > From here I know of a couple of routes to go which actually can blend
> > > together.
> > >
> > > First, an adjustable fuel pressure regulator which both Hesco and
> JeepsRUs
> > > said might be necessary. The downside is price. Hesco charges 180
> > > something for this piece. Here I don't know if this will definitely
> clear
> > > up the ping.
> > >
> > > The other route is the 4.0L head. I'm told that will definitely clear
> up
> > > any ping. Since I already have a 4.0L head sitting in my back yard
all
> > > ready to go I was thinking of just going to that. I only need to get
a
> > 4.0L
> > > manifold to make it work. The downside of that is the amount of work
I
> > need
> > > to do. Basically tear the whole thing apart again to put the head and
> > > manifold on.
> > >
> > >
> > > Anyone else run into this problem and found a work around?
> > >
> > > Any other suggestions?
> > >
> > > Oh, one other thing I noticed. After I put new plugs in I took a look
> at
> > > them to see their condition. It seems (and I've noticed this with the
> > carb
> > > and two sets of plugs in the MPI) that a carbon trace forms down one
> side
> > > (about 10% of the radius of the white part) of the plug on all plugs.
> Is
> > > this normal or is this fouling and if it is fouling what could be
> causing
> > > it? Could it be the 4.2L head might cause this? Valves? What?
> > >
> > > Thanks in advance,
> > >
> > > Bill
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>

Re: Got MPI. Now can't loose PING
 

An engine will just ping a lot easier if it's running too lean... and it can
also be bad for the engine because it runs hotter inside the combustion
chambers when it's running too lean. I'm really not much of an engine
mechanic but a too-lean condition can sure cause symptoms that sound like
yours.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"William Oliveri" <wuji@bigvalley.net> wrote in message
news:blo91i$ejvbl$1@ID-193866.news.uni-berlin.de...
> Why do you think it's running lean? What gives you that indication?
>
> If anything I thought it would be running rich, that I have some hole in
my
> exhaust manifold and the O2 sensor not compensating. Couldn't find one
but
> just a thought trying to figure this out.
>
> Thanks,
>
> bill
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:BFNfb.43680$gv5.38540@fed1read05...
> > It sure sounds like it's running way too lean. Is there anything
miswired
> > or anything else that could cause it to run too lean?
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/
> >
> > "William Oliveri" <wuji@bigvalley.net> wrote in message
> > news:blo8bh$e40ij$1@ID-193866.news.uni-berlin.de...
> > > Well, now that I have MPI on my CJ7 I now have PING I can't get rid
of.
> > I'm
> > > running 91 octane (highest in California). JeepsRUs pulled the timing
> > back
> > > 6 degrees. I put cooler spark plugs in at Hesco's recommendation.
> After
> > > all that I still have the ping.
> > >
> > > From here I know of a couple of routes to go which actually can blend
> > > together.
> > >
> > > First, an adjustable fuel pressure regulator which both Hesco and
> JeepsRUs
> > > said might be necessary. The downside is price. Hesco charges 180
> > > something for this piece. Here I don't know if this will definitely
> clear
> > > up the ping.
> > >
> > > The other route is the 4.0L head. I'm told that will definitely clear
> up
> > > any ping. Since I already have a 4.0L head sitting in my back yard
all
> > > ready to go I was thinking of just going to that. I only need to get
a
> > 4.0L
> > > manifold to make it work. The downside of that is the amount of work
I
> > need
> > > to do. Basically tear the whole thing apart again to put the head and
> > > manifold on.
> > >
> > >
> > > Anyone else run into this problem and found a work around?
> > >
> > > Any other suggestions?
> > >
> > > Oh, one other thing I noticed. After I put new plugs in I took a look
> at
> > > them to see their condition. It seems (and I've noticed this with the
> > carb
> > > and two sets of plugs in the MPI) that a carbon trace forms down one
> side
> > > (about 10% of the radius of the white part) of the plug on all plugs.
> Is
> > > this normal or is this fouling and if it is fouling what could be
> causing
> > > it? Could it be the 4.2L head might cause this? Valves? What?
> > >
> > > Thanks in advance,
> > >
> > > Bill
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>

Re: Got MPI. Now can't loose PING
 

An engine will just ping a lot easier if it's running too lean... and it can
also be bad for the engine because it runs hotter inside the combustion
chambers when it's running too lean. I'm really not much of an engine
mechanic but a too-lean condition can sure cause symptoms that sound like
yours.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"William Oliveri" <wuji@bigvalley.net> wrote in message
news:blo91i$ejvbl$1@ID-193866.news.uni-berlin.de...
> Why do you think it's running lean? What gives you that indication?
>
> If anything I thought it would be running rich, that I have some hole in
my
> exhaust manifold and the O2 sensor not compensating. Couldn't find one
but
> just a thought trying to figure this out.
>
> Thanks,
>
> bill
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:BFNfb.43680$gv5.38540@fed1read05...
> > It sure sounds like it's running way too lean. Is there anything
miswired
> > or anything else that could cause it to run too lean?
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/
> >
> > "William Oliveri" <wuji@bigvalley.net> wrote in message
> > news:blo8bh$e40ij$1@ID-193866.news.uni-berlin.de...
> > > Well, now that I have MPI on my CJ7 I now have PING I can't get rid
of.
> > I'm
> > > running 91 octane (highest in California). JeepsRUs pulled the timing
> > back
> > > 6 degrees. I put cooler spark plugs in at Hesco's recommendation.
> After
> > > all that I still have the ping.
> > >
> > > From here I know of a couple of routes to go which actually can blend
> > > together.
> > >
> > > First, an adjustable fuel pressure regulator which both Hesco and
> JeepsRUs
> > > said might be necessary. The downside is price. Hesco charges 180
> > > something for this piece. Here I don't know if this will definitely
> clear
> > > up the ping.
> > >
> > > The other route is the 4.0L head. I'm told that will definitely clear
> up
> > > any ping. Since I already have a 4.0L head sitting in my back yard
all
> > > ready to go I was thinking of just going to that. I only need to get
a
> > 4.0L
> > > manifold to make it work. The downside of that is the amount of work
I
> > need
> > > to do. Basically tear the whole thing apart again to put the head and
> > > manifold on.
> > >
> > >
> > > Anyone else run into this problem and found a work around?
> > >
> > > Any other suggestions?
> > >
> > > Oh, one other thing I noticed. After I put new plugs in I took a look
> at
> > > them to see their condition. It seems (and I've noticed this with the
> > carb
> > > and two sets of plugs in the MPI) that a carbon trace forms down one
> side
> > > (about 10% of the radius of the white part) of the plug on all plugs.
> Is
> > > this normal or is this fouling and if it is fouling what could be
> causing
> > > it? Could it be the 4.2L head might cause this? Valves? What?
> > >
> > > Thanks in advance,
> > >
> > > Bill
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>