Introduction:
The intake horn in a 6.7 Cummins engine is important for delivering air to the engine, but it can have issues that affect how it works. Problems like oil buildup, pressure imbalances, and leaks can make the engine not work as well. In this article, we’ll talk about why these problems happen and what can be done to fix them.
Why is there oil in the intake horn? Is it a bad sign?
Some oil in the 6.7 cummins intake horn is normal, but if there’s a lot of oil and high pressure, it could mean something is seriously wrong.
Oil can get into the intake because of too much blow-by, which is when gases from the engine pass the piston rings and bring oil mist into the intake.
This is a big problem if there’s a lot of oil because it can make the air and fuel mix in the engine not work well, make the engine not work as well, and make more soot.
If you see a lot of oil or the engine isn’t working right, it’s important to check and fix things like the PCV system, turbo seals, or piston rings.
What causes high intake manifold pressure?
High pressure in the intake manifold can happen for a few reasons:
– Turbocharger or Supercharger Boost: These systems push a lot of air into the engine, which makes the pressure in the intake go up.
– Clogged Air Filters: When the air filter is dirty or blocked, air can’t get through well, which makes the pressure in the intake go up.
– Exhaust Restrictions: Things in the exhaust, like a clogged DPF or catalytic converter, can make it harder for air to get out, which makes the pressure in the intake go up.
– Faulty Sensors or Valves: Sometimes sensors (like the MAP sensor) or the EGR valve don’t work right, and that can make the pressure higher than it should be.
If the pressure is too high, it can make the engine not work right, damage parts of the engine, and make the engine less efficient. This means that you might need to fix or change things.
Should I delete the EGR on my 6.7L Powerstroke truck?
If you delete the EGR on a 6.7L Powerstroke, it means that less dirty air goes back into the 6.7 Cummins intake horn, which makes it cleaner.
This cleaner intake helps air get through better and makes the engine work better.
The SPELAB intake horn is made to work well with EGR deletes and helps air flow better for a better engine response.
It’s made to work with EGR-deleted systems and makes the engine stronger and last longer.
What causes low intake manifold pressure?
Low pressure in the intake horn can happen for a few reasons:
– Air Leaks: Holes in hoses, loose clamps, or broken gaskets let air into the intake when it shouldn’t, which makes the pressure lower.
– Faulty Sensors: If sensors like the MAP sensor or throttle position sensor don’t work right, they can make the air and fuel mix in the engine not work well and make the pressure in the intake lower.
– Restrictions in the Intake System: Things like a dirty air filter, dirt in the throttle body, or dirt on the walls of the intake can make it hard for air to get through, which makes the pressure lower.
To fix these problems, you need to find what’s causing them and then change or clean the broken parts.
How to find air leaks in diesel fuel lines?
Air leaks in diesel fuel lines can make the engine not work well and cause problems with getting fuel to the engine.
It’s important to find these leaks. The easiest way is to look at the fuel lines and see if there are cracks or if things are loose.
If you see a problem, fix it right away. But if the problem isn’t easy to see, you can use a smoke test to find hidden or small leaks that you can’t see.
What will blow-by do to a diesel engine if left unchecked?
Blow-by happens when gases from the engine get past the piston rings and mix with the oil in the engine, which makes the engine not work well and makes parts of the engine wear out faster.
If you don’t fix this, it can really damage the engine.
If your vehicle has blow-by problems, you can check the following parts and solve the problem:
– Look at and Change Piston Rings: If the rings are old or broken, you need to change them to make the engine work right.
– Do a Compression Test: This will help you see if there are problems with the engine’s parts and if there’s blow-by.
– Check for Too Much Wear on the Cylinder Walls: If the walls are worn, you need to fix them so that the engine works right.
It’s also important to change the oil in the engine a lot and make sure it doesn’t get too hot to keep the chance of blow-by happening low.
SPELAB Black Friday event
SPELAB has prepared gifts and shopping discounts with a total value of approximately **$17,500 for the Black Friday event, and the total time of the event is November 1st – December 4th**. The event is divided into two lists, as follows:
Shopping list:
The list is divided into three stages, with a total of 30 winning places. At the end of each stage, the top ten users will receive gift cards of different denominations:
Phase 1: November 1st – November 10th (the top ten will be announced on November 11th).
Phase 2: November 11th – November 20th (the top ten will be announced on November 21st).
Phase 3: November 21st – December 2nd (the top ten will be announced on December 3rd).
The 20 users in each stage will receive gift cards of different denominations according to their rankings.
Interactive list:
The event time is November 1st – December 4th.
Users can participate in the event on SPELAB’s social media platforms (such as YouTube, Instagram, TikTok, and Facebook) by posting creative photos with the “SPELAB” tag, attaching “#SPELAB+desired modification parts” and @ the SPELAB’s official.
There are 6 places on this interactive list, and 6 winners will be selected in the end to receive gift cards of different denominations.
In addition, users can also get gift card rewards by forwarding official event content and getting more than 50 likes. There is no limit on the number of winners in this part.
This Black Friday event lasts for 34 days and provides a wealth of participation opportunities and rewards, aiming to give every user the opportunity to win SPELAB gift cards and discounts.
Conclusion:
Proper maintenance of the 6.7 cummins intake manifold and its components is essential to ensure optimal engine performance. Whether it’s high and low pressure, blow-by, or considering removing EGR, timely diagnosis and repair will prevent long-term damage and keep your engine running smoothly.
