One last shot... Breaking up!
- Thread starter BoostedSUV
- Start date
BoostedSUV
Active member
Re: One last shot... Breaking up!
I would if I had one to throw in there. I really don't want to spend more money to buy another just to try. I may do so though because I'm running out of ideas/options.
I would if I had one to throw in there. I really don't want to spend more money to buy another just to try. I may do so though because I'm running out of ideas/options.
BoostedSUV
Active member
Re: One last shot... Breaking up!
I haven't gotten any offers from the locals and I'm not one to ask for help. I figure I will figure it out eventually and if I don't I will part it out and try to recoup some funds.
This week I'm going to pull off the valve covers, pull all the plugs out, leak down the motor and check all the rocker adjustments.
I haven't gotten any offers from the locals and I'm not one to ask for help. I figure I will figure it out eventually and if I don't I will part it out and try to recoup some funds.
This week I'm going to pull off the valve covers, pull all the plugs out, leak down the motor and check all the rocker adjustments.
WyoSyclone
Active member
Re: One last shot... Breaking up!
Dang, I hate to see this not solved! In your first post you stated that it ran amazing up until one point one morning.... this was after you changed the gauge, etc.
So, I doubt that it would be the valve springs, although theoretically it's possible... it would have been doing this from the first startup, though, if it was the springs.....
Dang, I hate to see this not solved! In your first post you stated that it ran amazing up until one point one morning.... this was after you changed the gauge, etc.
So, I doubt that it would be the valve springs, although theoretically it's possible... it would have been doing this from the first startup, though, if it was the springs.....
BoostedSUV
Active member
Re: One last shot... Breaking up!
Ok I think we need to start concentrating on what the truck is telling me. My hard starting issue when the truck is warmed up has got to be a clue... When the truck is warm and I try starting it the ECM sees spikes of 6300 RPM at which point the inj DC jumps to 96percent which floods the motor. I have to hold it WOT to get it to finally fire up. Also the random code 42s I get when it starts and runs like the brown wire is disconnected. If I turn it off then back on it's "fine."
This has to be related to some sort of wacky signal that is causing my headaches. I want to concentrate on this issue and maybe the other will go away?
I already started putting together a parts list with prices for when I reach the end and pull the plug. I worked to hard to give up but patience is running out...
Ok I think we need to start concentrating on what the truck is telling me. My hard starting issue when the truck is warmed up has got to be a clue... When the truck is warm and I try starting it the ECM sees spikes of 6300 RPM at which point the inj DC jumps to 96percent which floods the motor. I have to hold it WOT to get it to finally fire up. Also the random code 42s I get when it starts and runs like the brown wire is disconnected. If I turn it off then back on it's "fine."
This has to be related to some sort of wacky signal that is causing my headaches. I want to concentrate on this issue and maybe the other will go away?
I already started putting together a parts list with prices for when I reach the end and pull the plug. I worked to hard to give up but patience is running out...
BoostedSUV
Active member
Re: One last shot... Breaking up!
Well I pulled the plugs out tonight (well 5 of them), I didn't feel like dropping the downpipe tonight. All the plugs were grayish-white and definitely showed lean. I leaked down the motor and cylinders 1,3,4 leaked less than 5%. #5 leaked almost 25%, and #2 leaked 17%. I'm not real happy with that.. I can hear the blow by coming out the dipstick tube. The motor was stone cold so it may seal up a little when it warms up, but I don't like that leakage. I'm going to check number 6 later this week. I also pulled the valve covers and all the rocker adjustments look good. I put another set of plugs back in and gapped them to .022.
I'm going to borrow a Dizzy from a friend with a salvage yard just to give it a shot. I will keep everyone posted....
Well I pulled the plugs out tonight (well 5 of them), I didn't feel like dropping the downpipe tonight. All the plugs were grayish-white and definitely showed lean. I leaked down the motor and cylinders 1,3,4 leaked less than 5%. #5 leaked almost 25%, and #2 leaked 17%. I'm not real happy with that.. I can hear the blow by coming out the dipstick tube. The motor was stone cold so it may seal up a little when it warms up, but I don't like that leakage. I'm going to check number 6 later this week. I also pulled the valve covers and all the rocker adjustments look good. I put another set of plugs back in and gapped them to .022.
I'm going to borrow a Dizzy from a friend with a salvage yard just to give it a shot. I will keep everyone posted....
BoostedSUV
Active member
Re: One last shot... Breaking up!
Well Dave, "certain it wasn't the dizzy, and faith in MSD" were definitely not the reasons. For one I've had this breaking up problem since 2006, and I've only used an MSD dizzy since late '08. The ONLY reason I changed to an MSD was because my stockers gear was worn out (no biggie to change), and a few people told me I've upgraded so much why not the dizzy too? Also I changed the ign module on the stocker chasing this issue back in 06.
Anyways, I did change the magnetic pickup, ignition module, cap and rotor of the MSD unit as I'm sure you read, so I figured there isn't much else that could be bad since a distributor is rather simple minus those vital "organs." I also did not want to purchase another distributor after spending $300 for a "good" distributor then spending another $100 to rebuild it. I am far from convinced that's my problem but at this point it's easy enough to change and I have just about given up. I honestly hope that fixes it because I don't really care what it is, I just want to find it. I will certainly be kicking myself in the ass if that turns out to be the issue and MSD will hear about it! I'm going to try to get a stocker to try this weekend and hopefully that proves things one way or another.... My money is against it being the distributor. Any takers? :lol:
There were a lot of fingers pointing towards injectors as well and I laid $330 to disprove that theory. Luckily it was an upgrade and they did need to be changed. Going back to a stock dizzy seems like a "downgrade" but I was really stupid for buying into the fact that I needed an MSD unit in the first place...
Well Dave, "certain it wasn't the dizzy, and faith in MSD" were definitely not the reasons. For one I've had this breaking up problem since 2006, and I've only used an MSD dizzy since late '08. The ONLY reason I changed to an MSD was because my stockers gear was worn out (no biggie to change), and a few people told me I've upgraded so much why not the dizzy too? Also I changed the ign module on the stocker chasing this issue back in 06.
Anyways, I did change the magnetic pickup, ignition module, cap and rotor of the MSD unit as I'm sure you read, so I figured there isn't much else that could be bad since a distributor is rather simple minus those vital "organs." I also did not want to purchase another distributor after spending $300 for a "good" distributor then spending another $100 to rebuild it. I am far from convinced that's my problem but at this point it's easy enough to change and I have just about given up. I honestly hope that fixes it because I don't really care what it is, I just want to find it. I will certainly be kicking myself in the ass if that turns out to be the issue and MSD will hear about it! I'm going to try to get a stocker to try this weekend and hopefully that proves things one way or another.... My money is against it being the distributor. Any takers? :lol:
There were a lot of fingers pointing towards injectors as well and I laid $330 to disprove that theory. Luckily it was an upgrade and they did need to be changed. Going back to a stock dizzy seems like a "downgrade" but I was really stupid for buying into the fact that I needed an MSD unit in the first place...
BoostedSUV
Active member
Re: One last shot... Breaking up!
lol I'm in central NJ, Somerset County.... Hillsborough to be exact. Maybe you've heard of it?
lol I'm in central NJ, Somerset County.... Hillsborough to be exact. Maybe you've heard of it?
BoostedSUV
Active member
Re: One last shot... Breaking up!
:rotf: I'm watching it right now as well. I hate them all! They all give NJ a bad name... Unfortunately that is how the jersey shore is during the summer... Ridiculous! Lol
:rotf: I'm watching it right now as well. I hate them all! They all give NJ a bad name... Unfortunately that is how the jersey shore is during the summer... Ridiculous! Lol
Windedv6
Ty n 10s
Re: One last shot... Breaking up!
When you have the distrubtor out take the time to put a light down the hole and check your cam gear. A flag went up when you mentioned that the stock gear was worn. Spark scatter caused by worn gears will play havoc with your timing and tune. Also your cap has telling signs of alignment changes. Easy to check the cam gear with the distrubtor out.
John
When you have the distrubtor out take the time to put a light down the hole and check your cam gear. A flag went up when you mentioned that the stock gear was worn. Spark scatter caused by worn gears will play havoc with your timing and tune. Also your cap has telling signs of alignment changes. Easy to check the cam gear with the distrubtor out.
John
BoostedSUV
Active member
Re: One last shot... Breaking up!
I picked up a brand new stock 4.3 dizzy that comes complete with cap/rotor/ign module etc never used. Paid $26 bucks for it on ebay... I will put it in and try it! :fingers crossed:
I also stopped being lazy and leaked #6 cyl. It leaked 18%... so I have 3 cylinders (1,2,3) leaking less that 5% and 3 cylinders (4,5,6) leaking around 20%. kind of weird ay?
I picked up a brand new stock 4.3 dizzy that comes complete with cap/rotor/ign module etc never used. Paid $26 bucks for it on ebay... I will put it in and try it! :fingers crossed:
I also stopped being lazy and leaked #6 cyl. It leaked 18%... so I have 3 cylinders (1,2,3) leaking less that 5% and 3 cylinders (4,5,6) leaking around 20%. kind of weird ay?
BoostedSUV
Active member
Re: One last shot... Breaking up!
well guys I put a brand new distributor in the truck. (dizzy/ign module/cap/rotor etc were all new). I also replaced the Knock sensor while I was back there. Now I'm getting a steady CODE 43, truck still breaks up at 2900 and 3900 and when it does I'm showing 4 degrees of spark retard! I never had a CE light or and KR prior to the new dizzy and knock sensor. Now what??
I also tried a different O2 sensor and that didn't change a thing either.
Well I'll be "dipped in sh*t" it wasn't the MSD distributor after all! :lol:
EDIT: Just checked the correct part number for the Knock sensor and its Supposed to be Standard KS6 and the parts store gave me a KS7. Guessing that would throw the code 43.
well guys I put a brand new distributor in the truck. (dizzy/ign module/cap/rotor etc were all new). I also replaced the Knock sensor while I was back there. Now I'm getting a steady CODE 43, truck still breaks up at 2900 and 3900 and when it does I'm showing 4 degrees of spark retard! I never had a CE light or and KR prior to the new dizzy and knock sensor. Now what??
I also tried a different O2 sensor and that didn't change a thing either.
Well I'll be "dipped in sh*t" it wasn't the MSD distributor after all! :lol:
EDIT: Just checked the correct part number for the Knock sensor and its Supposed to be Standard KS6 and the parts store gave me a KS7. Guessing that would throw the code 43.
Last edited:
BoostedSUV
Active member
Re: One last shot... Breaking up!
cam gear looked good as did the MSD dizzy gear. The stock dizzy gear had 120k miles on it so being worn didn't send up a flag. the MSD gear has about 15k on it and still looks brand new..
cam gear looked good as did the MSD dizzy gear. The stock dizzy gear had 120k miles on it so being worn didn't send up a flag. the MSD gear has about 15k on it and still looks brand new..
SloGN
9Sec Alky V6
Re: One last shot... Breaking up!
I had a 91 Z28 drive me nuts one time with about the same issues. I replaced just about every thing you have. module-pick-up, ecm, inj, What it turned out to be was the tach board in the cluster was shorting outing the signal at the coil somehow. if it's possible try and unhook the tach wire to see.
I'm still thinking about your nightmare and what else it couldn't be!
I had a 91 Z28 drive me nuts one time with about the same issues. I replaced just about every thing you have. module-pick-up, ecm, inj, What it turned out to be was the tach board in the cluster was shorting outing the signal at the coil somehow. if it's possible try and unhook the tach wire to see.
I'm still thinking about your nightmare and what else it couldn't be!
BoostedSUV
Active member
Re: One last shot... Breaking up!
I would have to figure out to go about doing this or if this could even apply. Any thoughts from the other gurus?
Re: One last shot... Breaking up!
If I am understanding correctly, one of your 3 trouble spots is gone and the remaining two have jumped up the rpm scale (a jump like when you replaced the injectors).
Whatever the problem is, it has been effected by new injectors and a different dizzy?
Gonna loose more sleep on this one.
Is there a local shop with an EGA? Very curious about what comes out of the pipe. That's got to tell us something one way or the other.
If I am understanding correctly, one of your 3 trouble spots is gone and the remaining two have jumped up the rpm scale (a jump like when you replaced the injectors).
Whatever the problem is, it has been effected by new injectors and a different dizzy?
Gonna loose more sleep on this one.
Is there a local shop with an EGA? Very curious about what comes out of the pipe. That's got to tell us something one way or the other.