Recent content by Red Top Engine
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Third head gasket job- why are they failing?
After speaking to my machinist (who checked heads as perfectly flat), he mentioned he used Permatex Copper Spray on his high performance builds for racing and has had no issues with it. Managed to convince me it wont hurt. I picked up OEM gaskets, sprayed and installed em'... so far truck is...- Red Top Engine
- Post #12
- Forum: LR4
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Third head gasket job- why are they failing?
The temp specs on the PL32A has me hesitant to to move forward with it for now. I'm leaning on installing OEM gasket with new head bolts, and pray it surpasses the 2 year cycle for now.- Red Top Engine
- Post #9
- Forum: LR4
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Third head gasket job- why are they failing?
Appreciate the quick feedback. Pretty sure the matting surfaces are flat across all angles, but will double check. In all the head gasket jobs I've done (on many other models too), I was told to install dry. This Rolls Royce spray can has be intrigued and I will look into it. In speaking to AB 2...- Red Top Engine
- Post #5
- Forum: LR4
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Third head gasket job- why are they failing?
I rebuilt my engine nearly 5 yrs ago. Had the heads, block, etc checked and replaced everything that could be replaced. Runs and drives great, no coolant loss etc. 2 years later, head gasket failure symptoms presented themselves. so I took it apart thinking the head-bolt threads are wearing...- Red Top Engine
- Thread
- Replies: 21
- Forum: LR4
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Replacement engine
Not true. Unlikely for a block to warp. A good machine shop will know the limits of how far they can mill the heads if they are warped. And if the heads are toast (say cracked or bearing shot), buy another on ebay and get it conditioned it at a machine shop. It is far cheaper than replacing an...- Red Top Engine
- Post #16
- Forum: LR4
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LR4 Restricted performance, rough idle
I've experienced similar fault with the MAF sensors, having to regularly clean them, progressively got worse and eventually replaced both.- Red Top Engine
- Post #8
- Forum: LR4
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P0301- Cylinder 1 misfire. Restricted Performance. Rough idle under Load. 2012 LR4
Found the problem: Bad Coil. The cylinder 1 plug did have a little oil on it but it didn't make a difference in engine performance after putting new one in. The moment I replaced the coil pack (on cyl 1), stumbling & hesitation stopped. Swapped around with a spare twice to confirm. These coils I...- Red Top Engine
- Post #5
- Forum: LR4
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Can anyone identify this slow ticking noise?
Fan Clutch for sure. Mine has been it for 3 years.. still works.- Red Top Engine
- Post #4
- Forum: LR4
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P0301- Cylinder 1 misfire. Restricted Performance. Rough idle under Load. 2012 LR4
Will swap the coil pack- test- replace all plugs & test and finally replace the injector. Keep you posted!- Red Top Engine
- Post #3
- Forum: LR4
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P0301- Cylinder 1 misfire. Restricted Performance. Rough idle under Load. 2012 LR4
Trying to get to the bottom of this gremlin: On cold startup, the engine will idle rather rough. Under load, it will hesitate a climb. Check engine light will flash, go into restricted performance mode. On restart, it will operate but still somewhat sluggish. Engine performs better after it was...- Red Top Engine
- Thread
- Replies: 5
- Forum: LR4
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Replacement engine
christine1125: A blown head gasket does not need an engine replacement. The head gaskets along with many other preventative maintenance components can be replaced at a fraction of the cost of replacement engine.- Red Top Engine
- Post #11
- Forum: LR4
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LR4 Restricted performance, rough idle
Have you obtained any of the codes? Please keep us posted as to what the results of replacing the throttle body are. Mine began to go into restricted performance mode on cold start up, cylinder 1 misfire. The check engine light would blink, then stay steady. I don't get the HDC and e-brake not...- Red Top Engine
- Post #6
- Forum: LR4
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LR4 Restricted performance, rough idle
Having similar issue, Cylinder # 1 missfire and restricted performance. I'm wondering if yours potentially has anything to do with the battery? These trucks are power hogs and batteries don't last.- Red Top Engine
- Post #4
- Forum: LR4
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SCV6 overheated and then catastrophe
It doesn't take long to overheat the engine. A leak in the cooling system will allow for air to get into the system, which would turn into steam which your secondary temp sensor will not be able to decipher actual temp. How does air get it? A compromised/leaking head gasket, potentially caused...- Red Top Engine
- Post #31
- Forum: LR4
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Before Top Dead Center
Yes, you can use the kebab stick, or look through the crank timing port for the enlarged gap as someone slowly rotates the engine. If you use a rod, kebab stick, or whatever on the cylinder... be careful it doesn't get stuck. I had a telescopic rod get stuck using this technique and had to...- Red Top Engine
- Post #11
- Forum: LR4
