The Problem:
* "Unless you keep the rpms up your stealth non turbo dies or will catchjerk like engine getting enough fuel" - This means the engine is struggling to run smoothly at low RPMs (revolutions per minute) and feels like it's not getting enough fuel. It might even stall.
Possible Causes:
* Fuel Delivery Issues:
* Fuel Filter: A clogged fuel filter restricts fuel flow, causing issues at low RPMs.
* Fuel Pump: A failing fuel pump might not provide sufficient pressure, particularly at low RPMs.
* Fuel Lines: Clogged or damaged fuel lines can restrict flow.
* Injector Issues: Clogged injectors or injectors that aren't opening properly can lead to uneven fuel delivery.
* Air Intake Issues:
* Air Filter: A dirty air filter restricts airflow, which can affect fuel-air mixture and cause problems at low RPMs.
* Engine Timing:
* Incorrect Timing: If the engine timing is off, the combustion process can be disrupted, leading to rough running.
* Other Potential Causes:
* Vacuum Leaks: Leaks in the intake manifold or vacuum lines can disrupt the air-fuel mixture.
* Sensor Problems: Sensors like the MAF (Mass Air Flow) sensor or the TPS (Throttle Position Sensor) can malfunction and send incorrect signals to the engine control unit.
The "New Exact Same" Replacement:
You mentioned a "new exact same" was put in. This could refer to a new engine or a new part (like the fuel pump or injectors). Here's why this is important:
* If it's a new engine: It's unlikely the issue is with the engine itself. However, if it was installed improperly, there could be problems with timing or connections.
* If it's a new part: The problem is more likely to be with the replaced part itself (defective or incorrectly installed) or with something else in the fuel system.
What to Do Next:
1. Check the Basics:
* Fuel Filter: Ensure it's clean and recently replaced.
* Air Filter: Make sure it's clean.
* Fuel Lines: Inspect for leaks or blockages.
* Intake Manifold: Look for cracks or leaks.
2. Get a Diagnostic Scan: Take your car to a mechanic to have it scanned for any trouble codes. This will help pinpoint the likely culprit.
3. Consult a Mechanic: It's best to have a qualified diesel mechanic inspect your vehicle and diagnose the specific problem. They will have the tools and expertise to diagnose the issue and recommend the appropriate repair.
