New Engine Install issue

HorneDogg

HorneDogg

New member
Hi All,

I just recently installed a new engine in my marauder. I have ran into an issue and wanted to see if anyone else has experienced a similar issue and what they did to correct it.

the issue is that the car seems to be running in some kind of limp mode. the Drivers side is running super lean and the passenger side is running super rich. The car is supercharged and was tuned by Reinhardt. any help would be greatly appreciated.

Thanks,

Jamie:beer:
 
its actually at the performance shop to be dyno'd and they are having the issue. they are not familiar with Marauders and haven't had this issue before.

I would think that they have the scan tool onsite in their garage
 
Not familiar with Marauders? Its essentially a mustang powertrain. A performance shop with a dyno that cant read codes or diag running issues sounds sketch to me.

Was it a new engine and has it run ok since the install at all?
 
HorneDogg said:
its actually at the performance shop to be dyno'd and they are having the issue. they are not familiar with Marauders and haven't had this issue before.

I would think that they have the scan tool onsite in their garage
Click to expand...


Umm, if they are not familiar with Marauders aka Mustangs get it out of there. It's boosted, if they screw up your engine goes boom. Has nothing to do with what type of car it is, a lean condition can be diagnosed by any competent technician. They should already know exactly what to look for.
 
Curless said:
Umm, if they are not familiar with Marauders aka Mustangs get it out of there. It's boosted, if they screw up your engine goes boom. Has nothing to do with what type of car it is, a lean condition can be diagnosed by any competent technician. They should already know exactly what to look for.
Click to expand...

Im with him.
 
its a MMR 1000SE short block, yes I understand that they should be able to find out what is going on.

the tune was originally a Reinshart tune as you say. I only have 30k on the body and the original engine went to crap. these guys know whats up with engines, I am just not sure of their troubleshooting skills, and I wasn't sure if it could be in the wiring somewhere.
 
HorneDogg said:
its a MMR 1000SE short block, yes I understand that they should be able to find out what is going on.

The tune was originally a Reinshart tune as you say. I only have 30k .... and the original engine went to crap.
Click to expand...

Nothing surprising there!

Sorry for the thread Hi-jack....hope that they figure out WTF is going on.
 
since the stuff is new, them being a mustang tuner, as mentioned, they need to look harder at "their" install work. better find out what they warranty.
 
Ask for a simple compression check on all 8 cylinders

My guess is they don't have that "unfamiliar" marauder motor timed correctly and a compression test will prove the valves are smashed because they didn't get the timing chains on correctly
 
yeah the engine is under warranty and they are taking all the precautions, engine assembly is not the issue here, it is literally doing the exact same thing it was before the new engine. it has to be something electronic somewhere and I was just hoping that someone might have had some type of similar issue. I cant be the only person that has had this issue.
 
mmr wont warranty it if the mustang shop trashes it. better find out what mustang shop will warranty. did you swap heads? who's heads are on it.
 
it not the timing, I timed the car the first time when I did the heads, and if I can do it once on a weekend someone that builds these engines for a living should be able to line up the shaded link to the mark. I think your comment was better left unsaid. valves are S.S. different comp ratio also. the issue started out with the original motor with the factory timing. I pulled heads and had heads redone due to the infamous rear cylinder valve seat issue. re-assembled, same issue was occurring, pulled engine and replaced with MMR short block and re-installed, same issue.

Guys, I am really just looking for some useful information if you have had a similar issue.
 
sounds like a head issue, you mention changing ratios, ratios of what ,? are the cams degreed? if it is the same before motor swap, prolly still an internal head issue.
 
HorneDogg said:
yeah the engine is under warranty and they are taking all the precautions, engine assembly is not the issue here, it is literally doing the exact same thing it was before the new engine. it has to be something electronic somewhere and I was just hoping that someone might have had some type of similar issue. I cant be the only person that has had this issue.
Click to expand...


Check compression, if its good, move to your theory of electronics... if it's not... well then you know your issue. You asked for help, you were told to check compression, then you stated it was not a mechanical issue... did you check compression or not? If the car was doing this and the engine went south, why wasn't it diagnosed? What exactly happened to it. What are the 02's doing while running? What is the injector ms at? Does it idle smoothly? Does it hunt for idle? What does it have for vacuum at idle? Have you checked for vacuum leaks? Plug off all of the vacuum lines coming from the intake... have you checked them all for cracks or rot? We need more info sir...
 
HorneDogg said:
I think your comment was better left unsaid.

Guys, I am really just looking for some useful information if you have had a similar issue.
Click to expand...


I hope its not my comment that you are referring to. Sorry if it offended you.



As far as useful info, a little more info is needed to diag an issue like this. If it is doing the "exact" same thing as the oem engine was doing, then i suspect a common denominator. Electrical, fuel, ect. Obviously if the old engine did it, and a new engine does it, its not the engine.

I understand you are looking for someone with the same issue to chime in with the simple answer but unfortunately i dont think its going to happen in this case. How did you determine one side lean and one side rich?
 
You mean SS like these? [emoji6]

5504d3a2e29ec9c29647f9ae8434b801.jpg


Yeah they bend just as easy.


Sent from my iThrone using Tapatalk
 
You must log in or register to reply here.
Back
Top